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My name is caitlin.
I have been at this school since prep.
I am almost 9 my
I like tenneissoccer and tv. It is fun.being out doors.
I have one sister her name is Briana. My mum and dads names are John and Rachel.I have 13 cousins.
On the holidayholidays I went went to lake eildon with back a fuwfew days latter
what kind of food do you like.
kind regards thank you for the letter.

stuff on peaches
When did you last have a cold that gave you a runny nose and made you sneeze? The common cold is one of hundreds of illnesses caused by viruses. The viruses are a group of micro-organisms, too small to be seen except through a special microscope called an electron microscope. In fact viruses are just about the smallest kinds of micro-organisms. Some are so small that 50,000 in a row would measure just one millimetre long. A pinhead-sized drop of water could contain 10 million viruses.
ARE VIRUSES ALIVE?
There are more than 3,500 main kinds of viruses. Some are simple rod shapes. Others are shaped like tiny golf balls, 20-sided boxes or tadpoles with a head and tail. All viruses cause diseases in other living things, because of the way they multiply. It is difficult to say if viruses themselves are really alive. Some kinds can be boiled or frozen, and turned into crystals, and show no signs of life for years. But this changes when the virus enters another living thing, called its host.
THE VIRUS INVADES
All living things are made of tiny building blocks called cells. Viruses have just one cell each. A virus is far smaller than the ordinary cells of plants and animals. It is smaller even than the one-celled micro-organisms known as bacteria. The viruses that specialize in attacking bacteria are known as bacteriophages or phages.
Most viruses are made of an outer covering formed from substances called proteins. This protein coat wraps around another substance inside, the genetic material. This is either DNA (deoxyribonucleic acid) or the similar RNA (ribonucleic acid). As in bigger living things, the virus’s genetic material contains instructions for surviving and making copies of itself. But viruses are not able to multiply by themselves. They need to get their genetic material inside a host cell in some other living thing before they can multiply. When a virus enters a cell of its host, it seems to come alive and takes off its protein coat.
HOW VIRUSES MULTIPLY
When the virus’s coat comes off, its genetic material can take over from the cell’s own genetic material. The cell follows new instructions—make more viruses. Within the host cell, copies of the virus’s genetic material are made, and new protein coats built for these to create new viruses. Soon the cell has built hundreds of viruses, which are copies of the original one. Usually the host cell is so damaged that it bursts open. The new viruses are set free to infect more cells, and so on. Sometimes the new viruses are released from the host by budding through the cell without killing it.
VIRUSES AND DISEASE
Usually, each type of virus infects only one kind of host. The first virus to be fully studied, in 1935, was TMV, tobacco mosaic virus. It causes patchy patterns on the leaves of tobacco plants. In people, different kinds of viruses cause many diseases, from cold sores (caused by one type of herpes simplex virus) and skin warts, to measles, mumps, rubella (German measles), chickenpox, shingles, flu (influenza), rabies, the liver disease hepatitis, the brain disease encephalitis, polio (poliomyelitis), yellow fever and some types of cancers. The HIV (human immunodeficiency virus) virus causes the very serious condition called AIDS (acquired immune deficiency syndrome).
NEW VIRUSES
A new kind of virus causes the illness SARS (severe acute respiratory syndrome) in people. A very similar virus has been found in mongoose-like animals called civets in East Asia. The virus may have changed, or mutated, into a new type or strain that then jumped to infect a different host—humans.
The abilities to mutate into new strains, and jump from one kind of living thing to another, are dangerous features of viruses. There are hundreds of strains of the common cold virus, and they are changing all the time. This is one reason scientists cannot develop a medical drug to treat the common cold.
USES FOR VIRUSES
The ability to jump from one kind of living thing to another may have produced the viruses that cause Lassa fever (a rare deadly disease) and AIDS. But this ability can also be helpful. Scientists use some viruses as carriers to take bits of genetic material from one kind of living thing to another. This is one method of genetic engineering or genetic modification to produce new forms of life.
THE BATTLE AGAINST VIRUSES
The changing nature of viruses means it is difficult to develop medical drugs to combat them. There are only a few kinds of these anti-viral drugs, compared to the many kinds of antibiotic drugs that fight bacteria.
One successful way of tackling viruses is vaccination. This usually involves giving injections (jabs or shots) against viral illnesses. For example, the MMR vaccine protects against measles, mumps and rubella. Vaccinations contain an altered version of a virus, which cannot multiply or cannot cause serious disease. When it enters the body, the body’s defences attack the virus. Then in future, if the real virus invades, the body’s defences will be prepared to act very quickly and kill it before it can multiply. This is known as being resistant, or immune, to the
Microsoft ® Encarta ® 2007. © 1993-2006 Microsoft Corporation. All rights reserved.

Peaches are the fruit of the peach tree, a deciduous orchard tree of the rose family. Peach trees are believed to be native to China, and grow in temperate and subtropical regions throughout the world. More than 300 varieties of peaches are currently cultivated. A relatively short-lived plant, the peach tree has an average orchard life of seven to nine years.
Look around your kitchen at home, and you will probably find lots of different fruits and seeds. Apples, bananas and mangoes are fruits, and so are the berries used to make jam and the tomatoes in tomato sauce. Besides the sesame seeds on burger buns and the seeds that gardeners buy, various kinds of seeds are used to make all kinds of useful products, like flour, coffee and sunflower oil. But what are fruits and seeds, and where do they come from?
MAKING NEW PLANTS
Plants grow seeds in order to reproduce, or make new plants. Each seed has the potential to grow into a new, full-sized plant like the plant it came from. So an acorn can become an oak tree, a grape pip can grow into a grapevine and poppy seeds can become new poppy plants.
Fruits are soft, fleshy coverings that surround some types of seeds. That is why a typical fruit such as an apple or a lemon has seeds (the pips) inside it.
WHERE DO FRUITS AND SEEDS COME FROM?
Fruits and seeds are made by a plant’s flowers. First of all, for a seed to form, a flower has to be fertilized. This happens when a grain of pollen, which is a type of male plant cell, joins up with a tiny female part of a flower called an ovule. After fertilization, the ovule starts to grow into a seed.
A flower’s ovules are stored inside a fleshy plant part called the ovary. In some plants, such as tomatoes, when the seeds start to form, the ovary around them swells up and gets thicker, becoming a soft, juicy fruit that surrounds the seeds.
In other plants, such as pears, the fruit is formed from another part of the plant called the receptacle. This is the thickened end of the stalk that the flower is attached to. When the seeds form, the receptacle swells up and turns into a fruit.
HOW DO SEEDS WORK?
Once a plant has made seeds, it releases them so that they can start growing into new plants. For example, on an apple tree, the apples containing the seeds drop off the tree onto the ground. On a dandelion, the seeds grow fluffy “parachutes” made of tiny hairs, so that when the plant lets them go they can float away on the wind. Most plants make lots and lots of seeds because not all of them will have a chance to grow into new plants. Only those that land on good soil, where there is plenty of sunlight and moisture to feed them, will be able to germinate (start growing).
INSIDE A SEED
A typical seed has three main parts. The embryo is the part that will become the new plant. The seed also contains a store of high-energy food to feed the embryo when it first starts to grow. (This food store is the reason seeds make such a good food for humans and other animals.) One or more parts called cotyledon help the new plant to grow by soaking up the food and passing it to the embryo.
When a seed starts to grow, the first thing it does is to put out a tiny root, which grows downward. Then the plant’s stalk starts to grow upward. Gradually, the root and the stalk both grow new offshoots, forming the plant’s root system, branches and leaves.
WHAT ARE FRUITS FOR?
The fruit surrounding a seed can help the seed find a good place to grow. How? By being eaten! A sweet, fleshy fruit makes a delicious meal for many types of animals. Birds eat berries, monkeys and bats love rainforest fruits such as guavas and humans gobble up apples and tomatoes. Fruit is a nutritious food, but the seeds inside are often very hard and pass through the animal’s gut without being digested. So they come out in the animal’s droppings and land on the ground, ready to start growing. By the time this happens, the animal is probably a long way away from the plant that the fruit originally came from. In this way, different plant species can spread their seeds over a wide area, so they are more likely to grow and survive.
CONES
Some plants, such as conifer trees, do not have flowers or fruits. Instead their seeds grow inside hard, scaly cones that open out to release the seeds when they are ripe. In biology, plants that grow flowers and fruits are called angiosperms, while plants that grow cones are called gymnosperms.
SEED DISPERSAL
The way a plant spreads its seeds around is known as seed dispersal. Most seeds float away on the wind, or rely on being eaten by animals. But a few plants have more unusual seed dispersal methods. Squirting cucumbers explode when they are ripe, firing their seeds several metres through the air. Some plants grow sticky coatings or tiny hooks so that they stick to animals’ fur, or people’s sweaters, and get carried far away. Some plants that grow by the sea, such as coconut palms, have floating seeds or fruits that can get washed away by the tide and carried to other lands.
FRUIT, SEEDS AND HUMANS
Fruit and seeds make up a major part of our diet. Seeds form many staple foods—the basic foods that keep most of us alive, such as rice, millet, oats, corn and wheat that is used to make bread. We also eat hundreds of types of fruits. Besides things like apples and oranges, many foodstuffs that we call vegetables are actually fruits too, including tomatoes, cucumbers, aubergines, olives, peppers and squashes. Beans, peas and nuts are also types of fruit and seeds. And fruits and seeds have other amazing uses too: grapes are made into wine, some larger seeds are made into jewellery and musical instruments, and various different types of seed oils are used to make cosmetics, paints and medicines. Thanks to all these uses, a huge amount of the world’s farming is based around cultivating plants to produce fruit and seeds.

genral statment on peaches.
bakround and hitory.
what peaches look like.
were peaches grows.
how peaches grow.
special feturs.
info onpeaches are the second bigest fruit. ( peaches )are from the chinese origin. choose peaches that are firm to touch when myou go shyopping. july abd august are peat season for fresh peaches. peaches are sometims soft and sometims hard and sometims juciy and sometims not. they are VEREY beautiful.

brain learnigI am going to explain what the reptilians job is and the mamalian and neo cortexs job is. The Reptilians job is that it protecs a atomatic brain.It helps blood curculat and the heart beat. It tells the person wethre to fight or flight. flight is when you take off. Fight is when you stay and fight. the mamalians job is to keep the person happy and safe. It controls the memory. it keeps yhe person stay with a rilationship. now the neo cortex job is to make shore you can read. uderstand things, written, sets us apart with animals,our ogerniseation.

When did you last have a cold that gave you a runny nose
genral statment on peaches.
bakround and made you sneeze? The common cold is one of hundreds of illnesses caused by viruses. The viruses are a group of micro-organisms, too small to be seen except through a special microscope called an electron microscope. In fact viruses are just about the smallest kinds of micro-organisms. Some are so small that 50,000 in a row would measure just one millimetre long. A pinhead-sized drop of water could contain 10 million viruses.
ARE VIRUSES ALIVE?
There are more than 3,500 main kinds of viruses. Some are simple rod shapes. Others are shaped like tiny golf balls, 20-sided boxes or tadpoles with a head and tail. All viruses cause diseases in other living things, because of the way they multiply. It is difficult to say if viruses themselves are really alive. Some kinds can be boiled or frozen, and turned into crystals, and show no signs of life for years. But this changes when the virus enters another living thing, called its host.
THE VIRUS INVADES
All living things are made of tiny building blocks called cells. Viruses have just one cell each. A virus is far smaller than the ordinary cells of plants and animals. It is smaller even than the one-celled micro-organisms known as bacteria. The viruses that specialize in attacking bacteria are known as bacteriophages or phages.
Most viruses are made of an outer covering formed from substances called proteins. This protein coat wraps around another substance inside, the genetic material. This is either DNA (deoxyribonucleic acid) or the similar RNA (ribonucleic acid). As in bigger living things, the virus’s genetic material contains instructions for surviving and making copies of itself. But viruses are not able to multiply by themselves. They need to get their genetic material inside a host cell in some other living thing before they can multiply. When a virus enters a cell of its host, it seems to come alive and takes off its protein coat.
HOW VIRUSES MULTIPLY
When the virus’s coat comes off, its genetic material can take over from the cell’s own genetic material. The cell follows new instructions—make more viruses. Within the host cell, copies of the virus’s genetic material are made, and new protein coats built for these to create new viruses. Soon the cell has built hundreds of viruses, which are copies of the original one. Usually the host cell is so damaged that it bursts open. The new viruses are set free to infect more cells, and so on. Sometimes the new viruses are released from the host by budding through the cell without killing it.
VIRUSES AND DISEASE
Usually, each type of virus infects only one kind of host. The first virus to be fully studied, in 1935, was TMV, tobacco mosaic virus. It causes patchy patternshitory.
what peaches look like.
were peaches grows.
how peaches grow.
special feturs.
info on the leaves of tobacco plants. In people, different kinds of viruses cause many diseases, from cold sores (caused by one type of herpes simplex virus) and skin warts, to measles, mumps, rubella (German measles), chickenpox, shingles, flu (influenza), rabies, the liver disease hepatitis, the brain disease encephalitis, polio (poliomyelitis), yellow fever and some types of cancers. The HIV (human immunodeficiency virus) virus causes the very serious condition called AIDS (acquired immune deficiency syndrome).
NEW VIRUSES
A new kind of virus causes the illness SARS (severe acute respiratory syndrome) in people. A very similar virus has been found in mongoose-like animals called civets in East Asia. The virus may have changed, or mutated, into a new type or strain that then jumped to infect a different host—humans.
The abilities to mutate into new strains, and jump from one kind of living thing to another, are dangerous features of viruses. There are hundreds of strains of the common cold virus, and they are changing all the time. This is one reason scientists cannot develop a medical drug to treat the common cold.
USES FOR VIRUSES
The ability to jump from one kind of living thing to another may have produced the viruses that cause Lassa fever (a rare deadly disease) and AIDS. But this ability can also be helpful. Scientists use some viruses as carriers to take bits of genetic material from one kind of living thing to another. This is one method of genetic engineering or genetic modification to produce new forms of life.
THE BATTLE AGAINST VIRUSES
The changing nature of viruses means it is difficult to develop medical drugs to combat them. There are only a few kinds of these anti-viral drugs, compared to the many kinds of antibiotic drugs that fight bacteria.
One successful way of tackling viruses is vaccination. This usually involves giving injections (jabs or shots) against viral illnesses. For example, the MMR vaccine protects against measles, mumps and rubella. Vaccinations contain an altered version of a virus, which cannot multiply or cannot cause serious disease. When it enters the body, the body’s defences attack the virus. Then in future, if the real virus invades, the body’s defences will be prepared to act very quickly and kill it before it can multiply. This is known as being resistant, or immune, to the
Microsoft ® Encarta ® 2007. © 1993-2006 Microsoft Corporation. All rights reserved.fruit. ( peaches )

1. genral staitment on peaches.
vc
Plants grow seeds in order to reproduce, or make new plants. Each seed has the potential to grow into a new, full-sized plant like the plant it came from. So an acorn can become an oak tree, a grape pip can grow into a grapevine and poppy seeds can become new poppy plants.
Microsoft ® Encarta ® 2007. © 1993-2006 Microsoft Corporation. All rights reserved.
2. backround oPeaches are the fruit of the peach tree, a deciduous orchard tree of the rose family. Peach trees are believed to be native to China, and grow in temperate and subtropical regions throughout the world. More than 300 varieties of peaches are currently cultivated. A relatively short-lived plant, the peach tree has an average orchard life of seven to nine years
Microsoft ® Encarta ® 2007. © 1993-2006 Microsoft Corporation. All rights reserved. f fruit
3. what the fruit looks like.( peach )
Fruits & Seeds
Look around your kitchen at home, and you will probably find lots of different fruits and seeds. Apples, bananas and mangoes are fruits, and so are the berries used to make jam and the tomatoes in tomato sauce. Besides the sesame seeds on burger buns and the seeds that gardeners buy, various kinds of seeds are used to make all kinds of useful products, like flour, coffee and sunflower oil. But what are fruits and seeds, and where do they come from?
MAKING NEW PLANTS
Plants grow seeds in order to reproduce, or make new plants. Each seed has the potential to grow into a new, full-sized plant like the plant it came from. So an acorn can become an oak tree, a grape pip can grow into a grapevine and poppy seeds can become new poppy plants.
Fruits are soft, fleshy coverings that surround some types of seeds. That is why a typical fruit such as an apple or a lemon has seeds (the pips) inside it.
WHERE DO FRUITS AND SEEDS COME FROM?
Fruits and seeds are made by a plant’s flowers. First of all, for a seed to form, a flower has to be fertilized. This happens when a grain of pollen, which is a type of male plant cell, joins up with a tiny female part of a flower called an ovule. After fertilization, the ovule starts to grow into a seed.
A flower’s ovules are stored inside a fleshy plant part called the ovary. In some plants, such as tomatoes, when the seeds start to form, the ovary around them swells up and gets thicker, becoming a soft, juicy fruit that surrounds the seeds.
In other plants, such as pears, the fruit is formed from another part of the plant called the receptacle. This is the thickened end of the stalk that the flower is attached to. When the seeds form, the receptacle swells up and turns into a fruit.
HOW DO SEEDS WORK?
Once a plant has made seeds, it releases them so that they can start growing into new plants. For example, on an apple tree, the apples containing the seeds drop off the tree onto the ground. On a dandelion, the seeds grow fluffy “parachutes” made of tiny hairs, so that when the plant lets them go they can float away on the wind. Most plants make lots and lots of seeds because not all of them will have a chance to grow into new plants. Only those that land on good soil, where there is plenty of sunlight and moisture to feed them, will be able to germinate (start growing).
INSIDE A SEED
A typical seed has three main parts. The embryo is the part that will become the new plant. The seed also contains a store of high-energy food to feed the embryo when it first starts to grow. (This food store is the reason seeds make such a good food for humans and other animals.) One or more parts called cotyledon help the new plant to grow by soaking up the food and passing it to the embryo.
When a seed starts to grow, the first thing it does is to put out a tiny root, which grows downward. Then the plant’s stalk starts to grow upward. Gradually, the root and the stalk both grow new offshoots, forming the plant’s root system, branches and leaves.
WHAT ARE FRUITS FOR?
The fruit surrounding a seed can help the seed find a good place to grow. How? By being eaten! A sweet, fleshy fruit makes a delicious meal for many types of animals. Birds eat berries, monkeys and bats love rainforest fruits such as guavas and humans gobble up apples and tomatoes. Fruit is a nutritious food, but the seeds inside are often very hard and pass through the animal’s gut without being digested. So they come out in the animal’s droppings and land on the ground, ready to start growing. By the time this happens, the animal is probably a long way away from the plant that the fruit originally came from. In this way, different plant species can spread their seeds over a wide area, so they are more likely to grow and survive.
CONES
Some plants, such as conifer trees, do not have flowers or fruits. Instead their seeds grow inside hard, scaly cones that open out to release the seeds when they are ripe. In biology, plants that grow flowers and fruits are called angiosperms, while plants that grow cones are called gymnosperms.
SEED DISPERSAL
The way a plant spreads its seeds around is known as seed dispersal. Most seeds float away on the wind, or rely on being eaten by animals. But a few plants have more unusual seed dispersal methods. Squirting cucumbers explode when they are ripe, firing their seeds several metres through the air. Some plants grow sticky coatings or tiny hooks so that they stick to animals’ fur, or people’s sweaters, and get carried far away. Some plants that grow by the sea, such as coconut palms, have floating seeds or fruits that can get washed away by the tide and carried to other lands.
FRUIT, SEEDS AND HUMANS
Fruit and seeds make up a major part of our diet. Seeds form many staple foods—the basic foods that keep most of us alive, such as rice, millet, oats, corn and wheat that is used to make bread. We also eat hundreds of types of fruits. Besides things like apples and oranges, many foodstuffs that we call vegetables are actually fruits too, including tomatoes, cucumbers, aubergines, olives, peppers and squashes. Beans, peas and nuts are also types of fruit and seeds. And fruits and seeds have other amazing uses too: grapes are made into wine, some larger seeds are made into jewellery and musical instruments, and various different types of seed oils are used to make cosmetics, paints and medicines. Thanks to all these uses, a huge amount of the world’s farming is based around cultivating plants to produce fruit and seeds.
Did you know? ||~ ||
• The biggest seed in the world comes from the Seychelles Island palm tree, which grows on the Seychelles Islands, in the Indian Ocean, and is known as the coco-de-mer seed. It grows up to 30 centimetres across and weighs around 16 kilograms.
• Buses can run on seeds! Some bus engines use rapeseed oil, squeezed out of the seeds of the rape plant, as their fuel.
• One type of specialist coffee is made from coffee beans that have passed through the digestive system of an animal called a palm civet, and have then been collected from its droppings.
Microsoft ® Encarta ® 2007. © 1993-2006 Microsoft Corporation. All rights reserved.
4.where peaches grows
Fruits and seeds are made by a plant’s flowers. First of all, for a seed to form, a flower has to be fertilized. This happens when a grain of pollen, which is a type of male plant cell, joins up with a tiny female part of a flower called an ovule. After fertilization, the ovule starts to grow into a seed.
Microsoft ® Encarta ® 2007. © 1993-2006 Microsoft Corporation. All rights reserved.
5. HOW it grows.
Fruits and seeds are made by a plant’s flowers. First of all, for a seed to form, a flower has to be fertilized. This happens when a grain of pollen, which is a type of male plant cell, joins up with a tiny female part of a flower called an ovule. After fertilization, the ovule starts to grow into a seed.
Microsoft ® Encarta ® 2007. © 1993-2006 Microsoft Corporation. All rights reserved.
6. special fetures on peaches or special things it can be used for.
7. special info on the fruit ( peaches )

more
When did you last have a cold that gave you a runny nose and made you sneeze? The common cold is one of hundreds of illnesses caused by viruses. The viruses are a group of micro-organisms, too small to be seen except through a special microscope called an electron microscope. In fact viruses are just about the smallest kinds of micro-organisms. Some are so small that 50,000 in a row would measure just one millimetre long. A pinhead-sized drop of water could contain 10 million viruses.
ARE VIRUSES ALIVE?
There are more than 3,500 main kinds of viruses. Some are simple rod shapes. Others are shaped like tiny golf balls, 20-sided boxes or tadpoles with a head and tail. All viruses cause diseases in other living things, because of the way they multiply. It is difficult to say if viruses themselves are really alive. Some kinds can be boiled or frozen, and turned into crystals, and show no signs of life for years. But this changes when the virus enters another living thing, called its host.
THE VIRUS INVADES
All living things are made of tiny building blocks called cells. Viruses have just one cell each. A virus is far smaller than the ordinary cells of plants and animals. It is smaller even than the one-celled micro-organisms known as bacteria. The viruses that specialize in attacking bacteria are known as bacteriophages or phages.
Most viruses are made of an outer covering formed from substances called proteins. This protein coat wraps around another substance inside, the genetic material. This is either DNA (deoxyribonucleic acid) or the similar RNA (ribonucleic acid). As in bigger living things, the virus’s genetic material contains instructions for surviving and making copies of itself. But viruses are not able to multiply by themselves. They need to get their genetic material inside a host cell in some other living thing before they can multiply. When a virus enters a cell of its host, it seems to come alive and takes off its protein coat.
HOW VIRUSES MULTIPLY
When the virus’s coat comes off, its genetic material can take over from the cell’s own genetic material. The cell follows new instructions—make more viruses. Within the host cell, copies of the virus’s genetic material are made, and new protein coats built for these to create new viruses. Soon the cell has built hundreds of viruses, which are copies of the original one. Usually the host cell is so damaged that it bursts open. The new viruses are set free to infect more cells, and so on. Sometimes the new viruses are released from the host by budding through the cell without killing it.
VIRUSES AND DISEASE
Usually, each type of virus infects only one kind of host. The first virus to be fully studied, in 1935, was TMV, tobacco mosaic virus. It causes patchy patterns on peachesthe leaves of tobacco plants. In people, different kinds of viruses cause many diseases, from cold sores (caused by one type of herpes simplex virus) and skin warts, to measles, mumps, rubella (German measles), chickenpox, shingles, flu (influenza), rabies, the liver disease hepatitis, the brain disease encephalitis, polio (poliomyelitis), yellow fever and some types of cancers. The HIV (human immunodeficiency virus) virus causes the very serious condition called AIDS (acquired immune deficiency syndrome).
NEW VIRUSES
A new kind of virus causes the illness SARS (severe acute respiratory syndrome) in people. A very similar virus has been found in mongoose-like animals called civets in East Asia. The virus may have changed, or mutated, into a new type or strain that then jumped to infect a different host—humans.
The abilities to mutate into new strains, and jump from one kind of living thing to another, are dangerous features of viruses. There are hundreds of strains of the common cold virus, and they are changing all the time. This is one reason scientists cannot develop a medical drug to treat the common cold.
USES FOR VIRUSES
The ability to jump from one kind of living thing to another may have produced the viruses that cause Lassa fever (a rare deadly disease) and AIDS. But this ability can also be helpful. Scientists use some viruses as carriers to take bits of genetic material from one kind of living thing to another. This is one method of genetic engineering or genetic modification to produce new forms of life.
THE BATTLE AGAINST VIRUSES
The changing nature of viruses means it is difficult to develop medical drugs to combat them. There are only a few kinds of these anti-viral drugs, compared to the many kinds of antibiotic drugs that fight bacteria.
One successful way of tackling viruses is vaccination. This usually involves giving injections (jabs or shots) against viral illnesses. For example, the MMR vaccine protects against measles, mumps and rubella. Vaccinations contain an altered version of a virus, which cannot multiply or cannot cause serious disease. When it enters the body, the body’s defences attack the virus. Then in future, if the real virus invades, the body’s defences will be prepared to act very quickly and kill it before it can multiply. This is known as being resistant, or immune, to the
Microsoft ® Encarta ® 2007. © 1993-2006 Microsoft Corporation. All rights reserved.

more things on peaches

stuff on peaches