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Life Science articles — Page 69

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 69 of 116

Explore related Science Lab activities about plants, animals and ecosystems or the human body, each at five reading levels.

Human skin color

People have many skin colors. Some skin is dark brown. Some skin is very light. This happens because of our parents. The sun can change it too. It helps keep us safe. Do you see many colors?

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Human variability

All people look different. We have different skin colors. We have different heights too. This helps us live in many places. It is fun to see how we are unique. Do you look like your friends?

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Human–wildlife conflict

People and animals sometimes clash. This can happen when we share space. Animals might eat our food. We might hurt the animals. It is hard for both of us. We must learn to live together. How can we help animals and…

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Humerus

You have a long bone in your arm. It goes from your shoulder to your elbow. This bone helps your arm move. It is very strong. It helps you play and lift things. Can you feel your arm bone?

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Hummingbird hawk-moth

This moth looks like a bird. It can hover in the air. It drinks from flowers. It makes a humming sound. This is fun to see! Do you like bright flowers?

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Humorism

Long ago, people had ideas about health. They thought four fluids lived in the body. These fluids helped keep us well. If they were not mixed right, we got sick. Doctors tried to fix the mix. Do you want to learn more?

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Humphead wrasse

This is a big fish. It lives on coral reefs. It has a bump on its head. It eats many small sea things. This fish is very special. Do you like fish?

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Hump-winged grig

Some bugs have bumpy wings. They live in far lands. The males make a loud sound at night. This sound helps them find friends. It is a busy life for them. Do you like bug sounds?

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Humulus lupulus

Hops are a climbing plant. They use tiny hairs to climb up. They have green flower cones. These cones add a bitter taste to drinks. We use them to make flavor. Do you like bitter tastes?

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Hunayn ibn Ishaq

Hunayn was a great thinker. He knew many ways to talk. He turned old books into new ones. This helped many people learn. He also helped sick people feel better. Do you like to learn new things?

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Huntington's disease

Some people get sick in their brain. This can make their bodies move in strange ways. It can also change how they feel. It often comes from a parent. Doctors help them every day. Do you want to learn more?

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Huntsman spider

The huntsman spider is a fast hunter. It does not use a web. It walks on walls and ceilings. It can even jump! Many of these spiders live in warm places. They like to hide under bark. Have you seen one?

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Husky

A husky is a strong dog. They live in cold places. These dogs pull sleds. They have thick fur to stay warm. They can also be pets. Do you like dogs?

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Hyacinth

Hyacinths are pretty flowers. They grow from small bulbs. These flowers smell very good. You can see them in spring. They come in many colors. Do you like the blue ones?

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Hyaenodon

The Hyaenodon was a meat eater. It lived a long time ago. Some were big. Some were small. It lived in many places. They are gone now. Can you find a bone?

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Hyaenodonta

Long ago, there were meat eaters called hyaenodonts. They lived in many places. Some were big like dogs. Some were very large. They had sharp teeth for eating. They are gone now. Do you like old bones?

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Hyaline cartilage

Our bodies have a special part. It is smooth and gray. It is in your nose. It is in your ribs, too. It helps your body stay strong. It can bend a little bit. Do you feel your nose?

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Hybodontiformes

These were shark-like fish. They lived a long time ago. They had sharp teeth. Some teeth were for crushing. They lived in salt and fresh water. They are gone now. Can you find their teeth in rocks?

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Hydra (genus)

A Hydra is a tiny water animal. It lives in ponds and lakes. It has long arms to catch food. It can grow back if it is cut. This is very cool! Do you like tiny animals?

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Hydrangea

Hydrangeas are pretty plants. They have big, colorful flowers. The flowers can change color. They can be blue or pink. This happens because of the dirt. Do you like pink or blue flowers?

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Hydrogen iodide

This is a clear gas. It can turn into a liquid in water. It helps us make iodine. This is very useful for science. It is a special part of our world. Do you like science?

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Hydrosaurus

These lizards have big tails. The tails look like sails. They live near water. They can run on top of water! It is a cool trick. Do you like lizards?

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Hydrozoa

Some tiny animals live in the water. They can live all alone. Some live in big groups. They can look like trees. These animals help us learn about nature. Do you like looking at sea life?

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Hylonomus

This animal lived a long time ago. It was small and had a long tail. It had skin like scales. It ate tiny bugs for food. It may have lived in old tree stumps. Can you find a bug in your yard?

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Hyneria

A big fish lived long ago. It swam in fresh water. This fish had very large teeth. It was a great hunter. It could grow very long. Can you imagine a fish that big? It was a very strong fish.

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Hyoid bone

You have a tiny bone in your neck. It is shaped like a horseshoe. This bone does not touch other bones. It stays in place with muscles. It helps you swallow food. It also helps you talk. Can you feel it in your neck?

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Hypercarnivore

Some animals eat mostly meat. They hunt for food. They may also find food that is left over. Lions and snakes do this. This helps them stay strong. Do you know any meat eaters?

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Hypergiant

Some stars are very big. They are much larger than our Sun. These stars shine very bright. They also lose parts of themselves. They do not live for a long time. Do you like looking at the stars?

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Hypertensive heart disease

Your heart pumps blood. Sometimes, blood pushes too hard. This can hurt your heart. It might make you feel tired. Eating well helps you stay strong. Moving your body helps too. Can you stay active today?

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Hyperthermia

Sometimes our bodies get too hot. This can happen in the sun. It can also happen when we play hard. Being too hot can make us feel sick. We must stay cool to stay safe. Do you like to stay cool?

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Hyperthyroidism

A small part of your neck works too fast. It makes your body feel too hot. Your heart might beat very fast. You might feel nervous or shaky. Doctors can help you feel better. Do you want to learn more?

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Hypocarnivore

Some animals do not eat much meat. They like to eat fruit. They also eat plants and mushrooms. This helps them live and grow. It is fun to see them eat. Do you like to eat plants too?

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Hypoesthesia

Sometimes your skin feels numb. You may not feel a touch. This can happen to your face or hands. It can happen if your nerves are hurt. A doctor can help you feel better. Do you know how your skin feels?

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Hypogeusia

Sometimes, food does not taste the same. It might taste very weak. This can happen for many reasons. It might even happen when you are sick. This can make eating hard. Do you like to taste new foods?

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Hyposmia

Sometimes we cannot smell well. Smells may seem very faint. This can happen to many people. It can make food taste dull. It might even happen after a cold. Do you like to smell flowers?

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Hypotension

Your blood moves through your body. It pushes on your tubes to move. Sometimes, the push is too soft. This can make you feel dizzy. You might feel very tired too. Does your head ever feel funny?

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Hypothalamus

A tiny part of your brain helps you. It is small like an almond. It tells you when to sleep. It tells you when you are hungry. It helps your body stay just right. Do you feel hungry now?

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Hypothetical types of biochemistry

Life might look different in space. On Earth, we use water. Other worlds might use different liquids. Some life could use things like silicon. It might not even be like us. Could you find life on a far moon?

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Hypothyroidism

A small part of your neck helps you. It makes things your body needs. Sometimes it does not make enough. This can make you feel very tired. It can also make you feel cold. Do you feel warm today?

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Hypovolemic shock

Your body needs fluid to work. Sometimes we lose too much. This can happen if we bleed. It can happen if we get very thirsty. We must get help fast. Doctors can give us more fluid. Can you stay healthy?

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Hypsilophodon

This was a small dinosaur. It lived a long time ago. It could run very fast. It used a beak to eat plants. It was a busy eater! Do you like dinosaurs?

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Hyssopus officinalis

Hyssop is a pretty plant. It has pink or blue flowers. It smells like mint. Some people use it in food. It can also help a cough. Do you like plants that smell good?

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Ian Clunies Ross

Ian Clunies Ross was a man who loved science. He helped animals stay healthy. He worked with many smart people. His work helped many people in Australia. We can see his face on money. Do you like learning about science?

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Ibn al-Nafis

Ibn al-Nafis was a wise doctor. He lived a long time ago. He learned how blood moves in our bodies. This helps us stay well. He wrote many books to help others. Do you like learning about the body?

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Ichthyology

People love to study fish. They look at how fish live. They learn where fish swim. This helps us know more about the water. It is fun to learn! Do you like fish?

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Ichthyornis

A long time ago, a bird lived by the sea. It was the size of a pigeon. This bird had teeth in its mouth! It could fly through the air. It was very special to see. Do you like birds with teeth?

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Ichthyosauria

These were big sea animals. They lived in the ocean. They looked like fish. They had flippers to swim. They were very cool. Do you like sea animals?

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Ichthyosporea

Some tiny things live in fish. They look like small round balls. These tiny things are not plants. They are not quite animals. They sit in the middle. They are very interesting to see. Can you find them in the water?

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