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Life Science articles — Page 4

Read about living things, from cells and plants to animals and the human body. Choose an article below; its reading controls let you move between the available levels.

5,533 public articles · Page 4 of 116

Alligator

An alligator is a big animal. It lives in the water. It can live in the heat or the cold. It is dark on top. The babies have bright stripes. It is a very cool animal. Do you like alligators?

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Alligator snapping turtle

This is a big turtle. It lives in the water. Its shell has bumpy ridges. It looks like an alligator. This helps it hide. It can be very heavy. Do you like turtles?

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Allosaurus

The Allosaurus was a big dinosaur. It had many sharp teeth. It walked on two legs. It had a long tail to help it stay balanced. It was a great hunter. Do you think it was fast?

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Almond

Almonds grow on trees. They have pretty pink flowers. The tree makes a small seed. This seed is what we eat. It is a tasty snack. Do you like to eat them?

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Aloe

Aloe is a green plant. It has thick leaves. These leaves hold water inside. This helps the plant live in dry places. People use it for skin care. Do you like plants?

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Alstroemeria

These are pretty flowers. They come from far away lands. The flowers have many bright colors. They look like little lilies. People put them in vases. They can stay fresh in water for a long time. Do you like bright…

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Alternative medicine

Some people use special ways to feel better. They do not use science to test them. These ways may not really work. Some ways can even hurt you. It is best to use real medicine. Do you know your doctor?

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Alveolate

Some tiny things have small sacs. These sacs are under their skin. They help hold the skin up. These living things can eat food. Some can even make food from light. They are very small. Can you find them in water?

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Al-Zahrawi

Al-Zahrawi was a great doctor. He lived a long time ago. He made new tools to help people. He wrote books to teach others. His work still helps us today. Do you want to be a doctor?

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Amanita muscaria

This mushroom is bright red. It has white spots on top. It grows in the woods. Do not eat this mushroom. It can make you sick. Have you seen a red mushroom?

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Amanita phalloides

The death cap is a mushroom. It can be green or white. It is very bad to eat. It can make people very sick. It is the most deadly mushroom. Do not touch it! Can you find one in the woods?

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Amaranth

Amaranth is a plant. It can grow very tall. The leaves can be green or red. Some people eat the seeds for food. It is a very useful plant. Do you like to eat plants?

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Amaryllis

This is a pretty flower. It grows from a bulb. It has pink or white petals. Some people call it a naked lady. It grows in South Africa. Do you like bright flowers?

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American bison

The bison is a big animal. It lives on wide, grassy plains. These animals are very heavy. They have short, curved horns. They eat grass all day. They are very strong. Can you see their big humps?

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American Brahman

The Brahman is a type of cow. These cows live in hot places. They do not mind the sun. They also stay safe from bugs. They help us get meat to eat. These cows are very strong. Do you like cows?

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American bullfrog

The bullfrog is a big frog. It lives near water. It makes a loud sound. It can eat many small things. This frog is very cool. Do you like frogs?

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American Museum of Natural History

This is a big museum. It is in New York City. You can see many animals there. You can see old bones too. It is a fun place to visit. Do you like animals?

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American robin

The robin is a pretty bird. It has a red chest. It eats worms and fruit. This helps it grow big and strong. It sings a sweet song. Can you hear its song?

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Amino acid

Tiny bits build your body. They join together to make protein. These proteins make your muscles. They help you grow big and strong. We need them to live. Do you like to eat healthy food?

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Amnesia

Sometimes people forget things. It can happen to the brain. Some people forget things from long ago. Some people forget new things. This can be hard for them. We can help them feel safe. Do you remember your lunch today?

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Amoebozoa

Some tiny things move like jelly. They can stretch out long arms. These arms help them find food. They live in water and dirt. Some are very big or very small. Can you find them in a pond?

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Amputation

Sometimes a part of the body is removed. This might be a finger or a leg. A doctor can do this to help. It can stop a sickness. It can also help with a bad hurt. We can use new tools to help us move. Do you want to…

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Analgesic

Some medicines help with pain. They can make you feel better. They work in your body. They help you when you are hurt. We use them to feel good. Do you ever feel pain?

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Anchovy

Anchovies are small fish. They live in the ocean. They swim in big groups. Many other animals eat them. They are good for many people to eat. Do you like fish?

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Andalusian horse

The Andalusian is a special horse. They come from Spain. They have long manes and tails. These horses are very smart. They can learn many things. Do you like horses?

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Andreas Vesalius

A man named Vesalius studied bodies. He wanted to see how we work. He looked at bones and parts inside. This helped doctors learn a lot. His books show us our bodies. Do you want to learn about bodies too?

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Anemia

Your blood helps you move. It carries air to your body. Sometimes, the blood has less air. This can make you feel tired. It might make you feel weak. Do you feel strong today?

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Aneurysm

{ "text": \"A blood vessel can bulge out. It looks like a little balloon. This happens at a weak spot. It can be in your head or belly. This matters for your health. Do you know where your heart is?\", "media": […

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Angiology

Doctors study how blood moves in you. They look at the tubes in your body. These tubes carry blood to your hands and feet. It helps keep you healthy. We want our blood to move well. Do you want to learn more?

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Anglerfish

Some fish have a tiny light. It looks like a fishing rod. They use it to find food. This helps them in the dark sea. It is very cool! Do you like fish?

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Animal coloration

Animals have many colors. Some hide in the trees. Some use bright colors to show off. Others use colors to say "stay away!" Colors help animals live. What is your favorite color?

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Animal locomotion

Animals move in many ways. Some swim in the sea. Some fly in the sky. Some run on the land. Moving helps them find food. It helps them stay safe. How do you move?

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Animal migration

Many animals move far away. They go to find food. They may go to stay warm. This helps them live well. It is a big trip! Do you like to travel?

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Anise

Anise is a plant with small seeds. These seeds have a sweet smell. People use them to make candy. They also use them in tea. It can make food taste good. Do you like sweet treats?

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Annelid

Some animals look like little rings. These are worms. Some live in the sea. Some live in the dirt. They help the soil stay good. Do you like to look for worms?

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Ant

Ants are small bugs. They live in big groups. They work together to help. They live almost everywhere on Earth. You might see them in your yard. Do you see ants?

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Antbird

Antbirds are small birds. They live in green forests. They eat tiny bugs for food. These birds stay with one mate. They build nests for their babies. Do you like birds?

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Anteater

An anteater loves to eat ants. It has a very long tongue. The tongue is sticky to catch bugs. This helps the animal find food. It is a very cool animal! Do you like ants?

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Antelope

Antelopes are fast animals. They live in many places. Most live in Africa. They have horns on their heads. These horns do not fall off. They can run very fast to stay safe. Do you like to run fast too?

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Anthrax

Some tiny germs can make us sick. They can live in the dirt. They often come from animals. This can happen to your skin. It can also happen in your tummy. Doctors have medicine to help. Can you stay safe and wash…

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Anthurium

Some plants have bright colors. They can look like pink birds. These plants grow in the shade. They like wet soil. Do not let pets touch them. They can make pets sick. Have you seen a bright flower?

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Antibody

Your body has tiny helpers. They look like the letter Y. They find bad germs. Then they stick to them. This helps you stay well. Can you feel your body working?

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Antonie van Leeuwenhoek

A man saw tiny things. He made a special glass tool. It helped him see very small life. He found tiny bugs in water. These bugs are too small to see. This helps us learn about life. Can you find a tiny bug?

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Ape

Apes are special animals. They live in warm places. Many apes do not have tails. They eat plants and fruit. Some apes are very rare now. We can learn a lot about them. Do you like apes?

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Aphid

Aphids are tiny bugs. They live on plants. They drink plant juice for food. Some are green or black. They can grow very fast. This helps them find many plants. Can you find one in a garden?

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Apocynaceae

Some plants have milky juice inside. They can be big trees or small vines. Some of these plants are very pretty. They grow in warm places. We use some of them in gardens. Do you like pretty flowers?

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Apple

An apple is a yummy fruit. It grows on a tree. These trees can be very tall. People eat them for snacks. They can be red or green. Do you like to eat apples?

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Apricot

An apricot is a small fruit. It grows on a tree. The fruit is orange and yellow. It is sweet and good to eat. You can eat it fresh or dried. Do you like sweet fruit?

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