Common carp
The carp is a big fish. It lives in lakes and rivers. It likes to eat bugs and plants. This fish can grow very large. It can live a long time. Do you like to see fish?
Early Reader · Change the reading level on the articleLife Science articles — Page 48
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.
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Explore related Science Lab activities about plants, animals and ecosystems or the human body, each at five reading levels.
Common collared lizard
This lizard has a black collar. It lives in dry places. Some males are very bright. They can run fast on two legs. This helps them hide from danger. Do you like bright colors?
Early Reader · Change the reading level on the articleCommon cuckoo
The cuckoo is a bird. It flies to many places. It lays eggs in other nests. This helps the bird have babies. It has a loud song. Can you hear it?
Early Reader · Change the reading level on the articleCommon death adder
A snake lives in Australia. It has red and black stripes. It hides under dry leaves. The snake waits for food to come by. It stays very still. This snake is special. Do you like snakes?
Early Reader · Change the reading level on the articleCommon hill myna
This bird is black and shiny. It has bright yellow skin on its head. It can learn to talk like us. These birds live in warm forests. They eat fruit and bugs. Do you want to hear them sing?
Early Reader · Change the reading level on the articleCommon house gecko
This is a small lizard. It lives in warm homes. It eats bugs at night. It makes a chirping sound. It is not bad for you. Can you hear it chirp?
Early Reader · Change the reading level on the articleCommon midwife toad
This toad is very special. The dad carries the eggs. He wraps them around his legs. He keeps them wet and safe. This helps the babies grow. Do you like toads?
Early Reader · Change the reading level on the articleCommon octopus
The common octopus lives in the sea. It can change its color. It is very smart. It can even open a jar! It likes to hunt for food. Do you like the ocean?
Early Reader · Change the reading level on the articleCommon ringtail possum
This small animal lives in trees. It has a long tail. The tail helps it climb. It eats leaves and fruit. Mothers carry babies in a pouch. Can you see its white tail tip?
Early Reader · Change the reading level on the articleCommon seadragon
The seadragon is a fish. It lives in the sea. It looks like green seaweed. This helps it hide. It is very pretty to see. Can you find it in the water?
Early Reader · Change the reading level on the articleCommon sunflower
The sunflower is a big plant. It has a large yellow head. It grows many small seeds. We can eat these seeds as a snack. They also make oil for cooking. Do you like sunflowers?
Early Reader · Change the reading level on the articleCommon swift
The swift is a fast bird. It stays in the sky. It eats bugs while it flies. It can even sleep in the air! This bird loves to fly. Do you like to fly too?
Early Reader · Change the reading level on the articleCommon toad
The common toad is a small animal. It has bumpy skin. It likes to hide in the day. At night, it goes out to hunt. It eats bugs and worms. It is a busy little friend. Do you like toads?
Early Reader · Change the reading level on the articleCommon walkingstick
This bug looks like a twig. It lives in the forest. It eats green leaves. This helps it hide from birds. It is fun to find! Can you see it?
Early Reader · Change the reading level on the articleCommon wood pigeon
The wood pigeon is a big bird. It is grey with a pink chest. It has white spots on its neck. You can see them in parks. They like to eat seeds and plants. Can you hear them coo?
Early Reader · Change the reading level on the articleCommunity (ecology)
Many living things live together. They share the same home. They may hunt or eat together. This helps the world work. It is like a big team. Do you see animals near you?
Early Reader · Change the reading level on the articleComoé National Park
This is a big park in Africa. It has many trees and grass. Many animals live here. You can see monkeys and birds. It is a safe home for them. Do you like to see animals?
Early Reader · Change the reading level on the articleCompassion
Compassion is being kind. It means you see someone in pain. You want to help them feel better. This can make you feel happy too. It is a very good thing to do. Do you like to help your friends?
Early Reader · Change the reading level on the articleComplementary DNA
Scientists can make a special copy of life. It is a copy of a tiny part of a cell. This copy helps us learn how cells work. It can even help us make new things. It is a very cool tool. Do you want to learn more?
Early Reader · Change the reading level on the articleComplete blood count
Doctors test your blood. They look at tiny parts. They count the red parts. They count the white parts. This helps you stay well. It is a smart test. Do you want to see your blood?
Early Reader · Change the reading level on the articleComprehensive metabolic panel
A doctor can check your blood. This test looks at your body. It checks your liver and kidneys. It also checks your sugar. This helps you stay well. Do you want to be healthy?
Early Reader · Change the reading level on the articleCompsognathus
This was a small dinosaur. It was the size of a chicken. It lived a long time ago. It ate small lizards for food. It had long legs to run. Do you think it was fast?
Early Reader · Change the reading level on the articleComputational biology
Computers help us learn about life. They look at tiny parts of our bodies. This helps us learn about how we grow. It can even help doctors. We can learn how to stay healthy. Do you like computers?
Early Reader · Change the reading level on the articleConch
A conch is a sea snail. It lives in the sea. It has a hard shell. Some people use the shell as a horn. It can make a loud sound. Do you like the sea?
Early Reader · Change the reading level on the articleCone cell
Tiny parts in your eye see color. They work best in the light. These parts help you see red and blue. They help you see things clearly. They are very small. Can you see all the colors?
Early Reader · Change the reading level on the articleCone snail
The cone snail lives in the sea. Its shell looks like a cone. It has many bright colors. The snail can sting to catch food. This sting can be very strong. Do you like colorful shells?
Early Reader · Change the reading level on the articleConfirmation bias
Sometimes we only look for things we like. We see things that say we are right. We might miss things that say we are wrong. This happens to all of us. It can change how we think. Do you ever do this too?
Early Reader · Change the reading level on the articleConfuciusornis
This bird lived long ago. It was the size of a crow. It had a beak but no teeth. This bird lived in China. It is very cool to see! Do you like birds?
Early Reader · Change the reading level on the articleConidium
Tiny bits of mold float in the air. These bits can grow into new mold. They stay very still. They wait for water and air to grow. This helps the mold spread. Do you see mold at home?
Early Reader · Change the reading level on the articleConium maculatum
This plant is called hemlock. It has purple spots on its stem. The plant is very bad to eat. It can make people and animals very sick. Please do not touch it. Do you see any spots on plants?
Early Reader · Change the reading level on the articleConjunctivitis
Your eye can look very pink. It might feel itchy or scratchy. This can happen from germs. It can also happen from dust. It can even happen from things like pet hair. Washing your hands helps you stay well. Does your…
Early Reader · Change the reading level on the articleConnecticut field pumpkin
This is a field pumpkin. It is round and orange. People use them for Halloween. You can carve them into faces. They grow on long vines. Do you like pumpkins?
Early Reader · Change the reading level on the articleConodont
Long ago, tiny sea animals lived in the water. They had small, hard teeth. These teeth helped them eat food. They looked like long eels. They had big eyes to see. Do you like looking at fossils?
Early Reader · Change the reading level on the articleConrad Gessner
Conrad loved plants and animals. He wrote many books about them. He liked to climb mountains too. He found new flowers to show us. His books help us learn today. Do you like to look at bugs?
Early Reader · Change the reading level on the articleConservation biology
People study how to help nature. They protect plants and animals. This helps keep our world healthy. It is good for us too. We can help our Earth. Do you like animals?
Early Reader · Change the reading level on the articleConstipation
Sometimes it is hard to go to the bathroom. The poop can be very hard. Your tummy might feel full or hurt. Drinking water and eating good food helps. You can feel better soon. Do you drink enough water?
Early Reader · Change the reading level on the articleControlled burn
People can start small fires. These fires help the land. They clear out old leaves. This helps new trees grow. It also stops big fires. Fire can be a good helper. Do you like to camp?
Early Reader · Change the reading level on the articleConvergent evolution
Some animals look alike. They live in different places. They use the same tools to live. Birds and bats both fly. This helps them move fast. It is a cool way to live! Do you see things that look alike?
Early Reader · Change the reading level on the articleConvolvulaceae
Some plants like to wind and climb. They have pretty flowers. We can eat some of them. You might eat a sweet potato! These plants are very cool. Do you like flowers?
Early Reader · Change the reading level on the articleCookiecutter shark
This is a small shark. It lives in warm ocean water. It has a dark neck. This helps it hide. The shark takes round bites from big fish. It is like a cookie cutter! Do you like cookies?
Early Reader · Change the reading level on the articleCooksonia
These were very old plants. They lived a long time ago. They had tiny stems. They did not have leaves. They also had no roots. These plants help us learn. Do you like old plants?
Early Reader · Change the reading level on the articleCooloola (insect)
The Cooloola monster is a small bug. It lives in the dirt in Australia. It stays under the ground. It eats other tiny bugs. These bugs have short feelers. They are very special. Do you like bugs?
Early Reader · Change the reading level on the articleCoonhound
These dogs have a great nose. They can find animals in trees. They use their smell to hunt. This helps people find things. They are very smart dogs. Do you like dogs?
Early Reader · Change the reading level on the articleCoot
A coot is a water bird. It is mostly black. They swim in open water. They have long toes to help them kick. We can see them on lakes. Have you seen a bird swim?
Early Reader · Change the reading level on the articleCopepod
Small bugs live in the water. They can be very tiny. Some are clear like glass. They use legs like oars to swim. They are food for fish. Can you find one in a pond?
Early Reader · Change the reading level on the articleCoprinus comatus
The shaggy ink cap is a mushroom. It grows in grass. It is white and looks shaggy. Soon, it turns into black ink. It melts away fast! Can you find one?
Early Reader · Change the reading level on the articleCoptotermes gestroi
Small white bugs live under the ground. They eat wood and paper. They can even eat clothes. These bugs like warm places. They stay in big groups. Do you want to see them?
Early Reader · Change the reading level on the articleCoraciidae
Rollers are bright birds. They have blue and pink colors. They fly in loops in the sky. They eat bugs for food. These birds live in warm places. Can you see their bright colors?
Early Reader · Change the reading level on the article