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Life Science articles — Page 89

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 89 of 116

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

Pattern hair loss

Some people lose hair on their head. This can happen to men and women. It is often from things in our bodies. It can also come from our families. It is very common. Do you have hair on your head?

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Paubrasilia

This is a special tree. It grows in Brazil. The wood is a bright red color. People use it to make bows for music. We must help these trees grow. Do you like music?

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Paul Ehrlich

Paul Ehrlich was a smart man. He looked at tiny things. He used colors to see blood. This helped him find sickness. He found new ways to help people. He was a great doctor. Do you like science?

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Paul Farmer

Paul Farmer was a kind doctor. He helped people who were sick. He worked in many far places. He wanted everyone to get help. He helped many families stay well. Do you want to help people too?

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Paul Nurse

Paul Nurse is a smart scientist. He studies how tiny living things grow. He found out how cells work. This helps us learn about life. He won a very big prize. Do you want to be a scientist too?

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Paul R. Ehrlich

Paul Ehrlich was a man who loved nature. He studied bugs like butterflies. He also talked about how many people live on Earth. He thought there were too many people. He wanted to help the world stay healthy. Do you…

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Pauropoda

Tiny bugs live in the dirt. They look like small millipedes. Most have nine pairs of legs. They like to hide in dark places. They eat tiny bits of mold. Can you find one in the soil?

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Pearlfish

Some small fish live in the sea. They are thin and clear. They live inside other sea life. This helps them stay safe. Can you find them in the ocean? They are very neat to see!

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Pecten maximus

The scallop lives in the sea. It has a hard shell. The shell can be pink or red. It can even swim! It snaps its shell to move. It has many tiny eyes. Do you like scallops?

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Pectin

Pectin is found in plants. It is in fruit skins. It helps make jams thick. This helps our food stay together. It is good for you too. Do you like fruit jam?

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Pectoralis major

You have big muscles on your chest. They help you move your arms. They help you lift a child. They help you throw a ball. These muscles help you stay strong. Do you feel your chest muscles move?

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Pedetes

Springhares are small animals. They live in Africa. They hop on their back legs. They sleep in holes in the ground. They eat plants and roots. Their fur can glow in the dark! Can you imagine that?

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Peking Man

Long ago, people lived in a cave. They lived near China. They saw big animals like bears. They used stones to make tools. It is a very old story. Do you like old stories?

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Pelagic fish

Some fish live in the open water. They stay far from the shore. They do not live on the bottom. They swim in the big blue sea. These fish can be very small. They can also be very large. Do you like to swim too?

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Pelagornis

This was a giant bird. It lived in the sea a long time ago. Its wings were very, very wide. It could catch slippery food in its beak. This bird was truly huge! Can you imagine a bird that big?

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Pelagornithidae

Big birds lived in the sea. They had bony points on their beaks. These points looked like teeth. These birds were very large. They could fly far. Do you like big birds?

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Pelican eel

The pelican eel lives in the deep sea. It has a very big mouth. This mouth can swallow big fish. It can even hide in the dark. The eel is black and dark. Do you want to see its big mouth?

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Pellagra

Our bodies need good food. Sometimes we do not get enough. This can make our skin hurt. It can make us feel sick. We can get better with good food. Do you eat your food?

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Pelycosaur

Some old animals lived long ago. They were like lizards. Some had a tall sail on their back. These animals were the start of mammals. They helped us learn about life. Do you like old bones?

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Penaeus monodon

The tiger prawn is a big shrimp. It has red and white stripes. These shrimp live in the sea. Many people eat them for food. They grow very fast. Do you like to eat shrimp?

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Pencil fish

Pencil fish are small fish. They look like long pencils. Some have dark stripes on them. Many have bright colors too. They live in the water in South America. These fish are very pretty to see. Do you like colorful fish?

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Penduline tit

These tiny birds are very special. They make soft nests. The nests hang from tree branches. They use hair and webs to weave them. This keeps the birds safe. Do you like to build things?

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Penetrance

Our bodies have tiny plans. These plans tell us how to grow. Some plans might make us sick. But not everyone gets sick. Some people stay very healthy. It is a big mystery. Do you wonder how it works?

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Penghu 1

Fishermen found an old jaw in the sea. It was deep under the water. This jaw belonged to a man from long ago. He was not like us. He lived in a land of grass. Can you imagine finding a bone in the sea?

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Pentatomoidea

Some bugs are called stink bugs. They can smell very bad. This helps them stay safe. They use a straw to drink from plants. Many of these bugs live in the world. Can you find one in a garden?

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Peony

Peonies are pretty flowers. They grow in many colors. You can find red, pink, or white ones. They smell very nice. They bloom in the spring. Do you like flowers?

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Peppered moth

The peppered moth is a small bug. It flies at night. Some are white with black spots. Other moths are dark black. They hide on trees to stay safe. Can you find a moth in a tree?

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Peppermint

Peppermint is a green plant. It grows in wet places. It has a very fresh smell. We use it in gum and toothpaste. It can feel cool on your skin. Do you like the smell?

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Peptic ulcer disease

An ulcer is a sore. It is inside your belly. It can feel like a burn. It can hurt when you eat. It can also hurt when you are hungry. Have you ever had a tummy ache?

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Peptide

Tiny bits join to make chains. These chains are in our bodies. They help our cells talk. They can also fight germs. This helps us stay well. Do you have these tiny chains inside you too?

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Peptidoglycan

Tiny germs have a hard skin. This skin helps them keep their shape. It acts like a strong net. This net keeps the germ safe. It helps the germ grow big. Do you like tiny things?

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Percussion (medicine)

A doctor can tap on your skin. They use their fingers to tap. This makes different sounds. The sounds help them learn about your body. It helps them see if you are well. Can you hear the sounds?

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Père David's deer

This deer lives in China. It likes to eat grass. It can swim in water. It has long horns. The deer can look like many animals. We help them stay safe. Do you like deer?

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Perentie

The perentie is a big lizard. It lives in the dry desert. It can run very fast. It uses long claws to climb. It can also dig holes. It is a very cool animal. Do you like lizards?

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Perinatal asphyxia

Babies need the air we breathe. Sometimes, a baby does not get enough air at birth. This can hurt their body. Doctors work fast to help them. We want all babies to be well. Do you know how we breathe?

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Periodical cicadas

Some bugs live under the dirt. They stay there for a long time. They wait for 13 or 17 years. Then they come out all at once. They make a loud song. Can you hear them?

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Periodontal disease

Your gums stay around your teeth. Sometimes they get red and puffy. They might even bleed a little. This can happen if we do not clean them well. We must brush and floss every day. It helps keep our teeth strong. Do…

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Peritoneum

A thin sheet lines your belly. It wraps around your organs. It helps them stay in place. It also helps them slide around. This keeps you safe inside. Do you feel your tummy? It is a busy place!

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Peroxisome

Tiny parts live inside your cells. They help keep you healthy. These parts break down fats. They also clean up bad things. This helps your brain work well. They are very small. Can you find them in a cell?

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Persian cat

The Persian is a cat with long hair. It has a round face. Some have very flat noses. This can make it hard to breathe. Many people love these cats. Do you like long hair cats?

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Personality type

People are all different. Some like to be with friends. Some like to be alone. This is how we act. It helps us know ourselves. Do you like to play with friends?

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Perspiration

Your body makes sweat. It is mostly water. Sweat helps you stay cool. This happens when you are hot. It also happens when you run. It keeps you safe. Do you feel sweaty today?

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Pest (organism)

A pest is a living thing. It can be bad for people. Some pests eat our food. Others can hurt our homes. They can even bite us. Do you know any pests?

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Petal

A petal is a part of a flower. They can be bright colors. They help bring bugs to the plant. This helps the plant grow. It is a very pretty part of nature. Do you like bright flowers?

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Peteinosaurus

This was a tiny winged lizard. It lived a long time ago. It liked to eat bugs. Its bones were very light. This helped it fly. It was very small. Can you imagine a tiny flying lizard?

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Peter Artedi

Peter Artedi loved fish. He studied many kinds of fish. He helped group them together. This work helps us learn about them. He was a great friend to other scientists. Do you like to look at fish?

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Peter Piot

Peter Piot is a doctor. He studies germs. He helps find ways to stop sickness. This work helps many people stay well. He is a very smart man. Do you want to be a doctor too?

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Peter Safar

Peter Safar was a kind doctor. He helped people stay alive. He found new ways to help hearts. He taught people how to breathe for others. His work helps us today. Do you want to be a doctor?

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