Eider
Eiders are big sea ducks. They live in cold places. They have very soft feathers. These feathers make warm quilts. We use them to stay cozy. Do you like soft pillows?
Early Reader · Change the reading level on the articleLife Science articles — Page 55
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 55 of 116
Explore related Science Lab activities about plants, animals and ecosystems or the human body, each at five reading levels.
Einkorn
Einkorn is a type of wheat. It grows in small seeds. Each part has just one seed. People have grown it for a long time. It can grow in dry soil. It is good food for us. Do you like wheat?
Early Reader · Change the reading level on the articleElacatinus
Tiny fish live in the sea. They are called neon gobies. They have bright blue stripes. These fish clean other fish. They eat tiny bugs off skin. This helps the big fish stay well. It is a kind thing to do. Do you…
Early Reader · Change the reading level on the articleElaninae
Some birds are called kites. They have long wings. Some hunt small mice. Others catch bugs in the air. These birds live in many places. They are very neat to see! Do you like birds?
Early Reader · Change the reading level on the articleElapidae
Some snakes have special teeth. These teeth are at the front. They help the snakes hunt. Many of these snakes can bite. They live in warm places. They live on land and in the sea. Do you like snakes?
Early Reader · Change the reading level on the articleElasmosaurus
The Elasmosaurus was a sea reptile. It had a very long neck. It lived in the water long ago. It used flippers to swim. It could catch small fish. Can you imagine a neck that long?
Early Reader · Change the reading level on the articleElasmotherium
This was a very big rhino. It lived a long time ago. It was as big as an elephant. This animal ate grass and roots. It was a giant! Can you imagine seeing one?
Early Reader · Change the reading level on the articleElbow
Your elbow is a joint. It is in your arm. It helps you move your hand. It works like a hinge. You can bend your arm. You can also straighten it. Can you bend your arm now?
Early Reader · Change the reading level on the articleElectroencephalography
Doctors can see how your brain works. They use small tools on your head. These tools listen to your brain. It helps them keep you healthy. It is very safe. Can you imagine your brain talking?
Early Reader · Change the reading level on the articleElectron transport chain
Tiny parts in your body work hard. They move things to make food. This helps you grow and play. It is like a little power plant. It keeps you going all day. Can you feel your energy?
Early Reader · Change the reading level on the articleElephant bird
The elephant bird was very big. It lived on a far island. It could not fly. It ate plants for food. These birds are gone now. We can see their old bones. Do you think they were heavy?
Early Reader · Change the reading level on the articleElephant seal
Elephant seals are very big animals. They live in the deep ocean. They can stay under the water for a long time. This helps them find food to eat. They are amazing swimmers. Do you like to swim in the water?
Early Reader · Change the reading level on the articleElephant shrew
This animal has a long nose. It looks like an elephant trunk. It lives in Africa. It eats bugs and worms. It can run very fast. It likes to jump. Can you see its long nose?
Early Reader · Change the reading level on the articleÉlie Metchnikoff
A man named Elie studied life. He found tiny cells in our blood. These cells help us stay well. They fight bad things in our bodies. This work helped many people. Do you want to stay healthy too?
Early Reader · Change the reading level on the articleElizabeth Blackburn
Elizabeth Blackburn is a great scientist. She studies how our bodies work. She found a way to help cells. This helps us learn about growing old. She even won a very big prize! Do you like to learn new things?
Early Reader · Change the reading level on the articleElizabeth Kenny
Elizabeth Kenny was a kind nurse. She helped people feel better. She used warm cloths on their legs. This helped their muscles work again. Her new ideas helped many people. Do you want to be a nurse?
Early Reader · Change the reading level on the articleElizabeth Loftus
A woman studies how we remember things. She looks at how we think. Sometimes our minds make mistakes. We might think we saw something that did not happen. This helps us understand our brains. Can you remember…
Early Reader · Change the reading level on the articleElmer McCollum
A man named Elmer studied food. He wanted to know what helps us grow. He worked with small rats. He found things in food that keep us healthy. These help our bodies stay strong. Do you eat your greens?
Early Reader · Change the reading level on the articleEmbalming
People use special liquids to help a body stay the same. This helps people say goodbye. It can also help doctors learn. This has happened for a long time. It helps keep things clean. Do you want to learn more?
Early Reader · Change the reading level on the articleEmberiza
Buntings are small birds. They like to eat seeds. They have short, strong beaks. These birds live in many places. They are very interesting to see. Can you find a bird today?
Early Reader · Change the reading level on the articleEmbioptera
Webspinners are tiny bugs. They make silk homes. They spin silk with their legs. These homes look like webs. It keeps them safe. Do you like webs?
Early Reader · Change the reading level on the articleEmergency medical technician
Some people help when people are hurt. They work in fast trucks. They can work at a fire station. They help keep us safe. They are very kind. Do you want to help people too?
Early Reader · Change the reading level on the articleEmergency medicine
Some doctors help people right away. They help when you are hurt. They help when you are sick. These doctors work in big hospitals. They help all kinds of people. They are very kind. Do you want to be a doctor?
Early Reader · Change the reading level on the articleEmil du Bois-Reymond
Emil was a smart man. He studied how bodies work. He found tiny sparks in living things. This helps us learn about life. It is very cool. Do you like science?
Early Reader · Change the reading level on the articleEmil von Behring
Emil was a doctor. He helped sick children. He found a way to fight bad germs. This helped many people stay well. His work was very good. Do you want to be a doctor too?
Early Reader · Change the reading level on the articleEmmanuelle Charpentier
Emmanuelle is a smart scientist. She studies tiny living things. She found a way to change how things grow. This helps us stay healthy. She won a very big prize. Do you want to be a scientist too?
Early Reader · Change the reading level on the articleEmperor angelfish
The emperor angelfish is a bright fish. It lives in the deep sea. It has blue and yellow stripes. It can hide in coral caves. This fish is very pretty to see. Do you like bright colors? Can you find a blue fish?
Early Reader · Change the reading level on the articleEmperor dragonfly
The blue dragonfly is very big. It flies high in the sky. It eats small bugs while it flies. You might see it near a pond. It is a bright blue color. Can you find one?
Early Reader · Change the reading level on the articleEmperor penguin
The emperor penguin is a big bird. It lives on the cold ice. It eats fish and squid. The daddy penguin keeps the egg warm. The mom goes to find food. They are very brave birds. Do you like penguins?
Early Reader · Change the reading level on the articleEmperor scorpion
The emperor scorpion is very big. It lives in Africa. It has large black claws. It can glow blue in special light. Most stings are not bad. Do you like big bugs?
Early Reader · Change the reading level on the articleEmpusidae
Some bugs look like plants. They hide to catch food. These bugs live in warm places. They can even make a hissing sound. They look very strange and cool. Can you find them in a garden?
Early Reader · Change the reading level on the articleEnantiornithes
Long ago, there were many birds. They lived all over the world. Most of them were small. Some had teeth in their mouths. They had claws on their wings, too. They are gone now. Do you like old birds?
Early Reader · Change the reading level on the articleEndemism
Some animals live in only one place. They do not live anywhere else. This can happen on a small island. It can happen in a big forest. This helps us learn about our world. Can you find a special animal near you?
Early Reader · Change the reading level on the articleEndive
Endive is a green leaf vegetable. Some leaves are curly. Other leaves are wide and pale. You can put them in a salad. You can also cook them in soup. They help your body stay strong. Do you like to eat greens?
Early Reader · Change the reading level on the articleEndocrine gland
Your body has tiny parts that help you. They send messages through your blood. These messages tell your body how to work. They help you grow and stay well. It is like a tiny team inside you. Do you want to learn more?
Early Reader · Change the reading level on the articleEndocrinology
Your body has tiny parts that send messages. These messages travel in your blood. They help you grow and stay well. They even help you sleep. These messages are very important. Do you want to learn more?
Early Reader · Change the reading level on the articleEndocytosis
Tiny cells can take things in. They wrap their skin around stuff. Then the stuff goes inside. This helps cells get food. It is like a tiny hug. Can you imagine being that small?
Early Reader · Change the reading level on the articleEndodermis
Plants have a special part in their roots. It is a ring of tiny cells. This part stops too much water from moving. It helps the plant stay healthy. It even stores food. Can you find a plant in your yard?
Early Reader · Change the reading level on the articleEnd-of-life care
Doctors help people feel good. They do this when someone is very sick. They help with pain. They also help with feelings. Family can help too. It is a kind way to be. Do you know someone who helps?
Early Reader · Change the reading level on the articleEndomembrane system
A tiny cell has many parts. These parts work as one team. They move food and tools around. This helps the cell stay strong. It is like a busy city. Can you imagine a tiny city inside you?
Early Reader · Change the reading level on the articleEndospore
Some tiny germs can sleep. They make a hard shell. This shell keeps them safe. It helps them live for a long time. They can wake up later. Do you want to see them sleep?
Early Reader · Change the reading level on the articleEndospore staining
Some tiny germs have hard shells. These shells help them stay safe. They can live in very hot places. They can even live in the cold. We use colors to see them. The shells look like green dots. Can you see the tiny…
Early Reader · Change the reading level on the articleEndothelium
A thin layer lines your tubes. These tubes carry blood. They help move things in your body. This layer keeps you healthy. It helps your blood flow well. Can you feel your heart beat?
Early Reader · Change the reading level on the articleEndotherm
Some animals stay warm inside. They make their own heat. This heat comes from food. It helps them live in the cold. We call them warm blooded. Do you feel warm too?
Early Reader · Change the reading level on the articleEnergy flow (ecology)
Plants get energy from the sun. They use it to make food. Then, animals eat the plants. This gives the animals energy too. This helps everything live. Can you see energy moving?
Early Reader · Change the reading level on the articleEnhancer (genetics)
Tiny parts help our bodies work. These parts tell our cells what to do. They can turn things on or off. This helps us grow well. It is like a little switch. Do you wonder how you grow?
Early Reader · Change the reading level on the articleEnsis
These are razor clams. They live in the sand. Their shells are long and thin. They can dig very fast. You might see them at the beach. They are fun to find! Do you like the beach?
Early Reader · Change the reading level on the articleEntelodontidae
These animals lived long ago. They looked a bit like pigs. They had very big heads. They could eat many things. They used big teeth to chew. Can you imagine a pig that big?
Early Reader · Change the reading level on the article