Koko (gorilla)
Koko was a famous gorilla. She lived with people. She used hand signs to talk. This helped us learn about her. She was a very special animal. Do you like animals?
Early Reader · Change the reading level on the articleLife Science articles — Page 74
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 74 of 116
Explore related Science Lab activities about plants, animals and ecosystems or the human body, each at five reading levels.
Kookaburra
The kookaburra is a bird. It lives in trees. It makes a loud sound. It sounds like a laugh. This bird eats small animals. It can be a fun sound to hear. Do you like to laugh?
Early Reader · Change the reading level on the articleKoolasuchus
A big animal lived in the water. It lived long ago in Australia. It had a wide head and sharp teeth. This animal was a hunter. It liked cool streams. Do you like to swim in water?
Early Reader · Change the reading level on the articleKronosaurus
A big sea lizard lived long ago. It lived in the water. It had four flippers to swim. It had a very large head. The lizard was very big. Do you like big sea animals?
Early Reader · Change the reading level on the articleKronotsky Nature Reserve
This is a big land in Russia. It has hot water that shoots up. It has many big volcanoes too. Large brown bears live here. They like to swim in the rivers. It is a very special place. Do you like to see bears?
Early Reader · Change the reading level on the articleKudzu
Kudzu is a fast plant. It is a long vine. It grows over big trees. It takes their sun. This can hurt the trees. We must help the trees. Can you see the green leaves?
Early Reader · Change the reading level on the articleKunstformen der Natur
A man made art from nature. He drew many tiny living things. He drew sea life and jellies. These drawings look very pretty. They help us see how things grow. Do you like looking at art?
Early Reader · Change the reading level on the articleKurt Koffka
Kurt Koffka was a smart man. He studied how we see things. He liked to learn about the mind. This helped us understand our world. He was a very good teacher. Do you like to learn new things?
Early Reader · Change the reading level on the articleLablab
This is a bean plant. It grows on long vines. It can have blue or white flowers. People eat the beans for food. It helps the soil grow good. Do you like beans?
Early Reader · Change the reading level on the articleLaboratory mouse
Lab mice are small animals. They help us learn. Scientists use them to study health. This helps people stay well. They are very useful. Do you like mice?
Early Reader · Change the reading level on the articleLaboratory rat
Some rats live in labs. They help doctors learn. They help us stay well. These rats are very calm. They are not like wild rats. We study them to help people. Do you like rats?
Early Reader · Change the reading level on the articleLaboratory safety
Labs can be tricky places. They have things that can hurt. Some things are very hot. Some things are very cold. We wear gloves to stay safe. We must be very careful. Do you like science?
Early Reader · Change the reading level on the articleLacerta (genus)
These are green lizards. They live in many places. Some are very large. They lived long ago too. You can see them in the grass. Do you like lizards?
Early Reader · Change the reading level on the articleLacertidae
These are wall lizards. They live in many warm places. They have long tails and thin bodies. Most of them eat bugs. It is fun to see them move. Can you find a lizard?
Early Reader · Change the reading level on the articleLactobacillus
Tiny living things live in you. They help keep you well. You can find them in yogurt too. They work with your body to stay safe. Do you like yogurt?
Early Reader · Change the reading level on the articleLactobacillus delbrueckii subsp. bulgaricus
Tiny living things make yogurt. They live in milk. They change the milk to make it thick. This makes it taste tart. It helps make yummy food. Do you like yogurt?
Early Reader · Change the reading level on the articleLactococcus lactis
Tiny living things help make food. They turn milk into cheese. They also make buttermilk. These little things are safe for us. They help us eat yummy snacks. Do you like cheese?
Early Reader · Change the reading level on the articleLactose intolerance
Some people cannot eat milk. This happens because their bodies cannot use the sugar in milk. It can make their bellies feel bad. This does not hurt them for long. You can still eat other foods. Do you like milk?
Early Reader · Change the reading level on the articleLady Amherst's pheasant
This bird has a red crest. It has a long tail. The male has many bright colors. He can hide in dark woods. We can see him run fast. Do you like bright birds?
Early Reader · Change the reading level on the articleLagerpetidae
These were small animals from long ago. They lived in many places. They had thin legs and small teeth. Some even had a beak. They were very light. Can you imagine a tiny reptile?
Early Reader · Change the reading level on the articleLaika (dog type)
Laika dogs come from the cold north. They are very strong dogs. They can help people hunt. Some can even pull sleds. These dogs work hard in the snow. Do you like dogs?
Early Reader · Change the reading level on the articleLake ecosystem
A lake is a home for many things. It has plants and fish. It also has tiny life. The sun helps the green plants grow. These plants make food for others. It is a busy place! Do you like to visit lakes?
Early Reader · Change the reading level on the articleLambeosaurus
Lambeosaurus was a big dinosaur. It lived a long time ago. It had a funny shape on its head. This part helped it make loud sounds. It could walk on two legs or four legs. Do you like dinosaurs?
Early Reader · Change the reading level on the articleLamiales
Many plants are in this group. They grow all over the world. Some smell very good. We use them for food or medicine. They help us every day. Can you find a mint plant?
Early Reader · Change the reading level on the articleLamniformes
Some sharks are very special. They live in the big blue sea. Some are very fast. Others eat tiny things in the water. They are amazing to see! Do you like sharks?
Early Reader · Change the reading level on the articleLampriformes
Some fish live deep in the sea. They can be very bright. Some look like long ribbons. Others are round like a disc. One fish is very long. It is the longest bony fish. Do you like bright colors?
Early Reader · Change the reading level on the articleLancelet
The lancelet looks like a small fish. It lives on the bottom of the sea. It eats tiny bits of food from the water. This helps it grow big and strong. It is a very neat animal to see! Do you want to see it glow?
Early Reader · Change the reading level on the articleLancetfish
The lancetfish is a big fish. It lives in the deep ocean. It has a very large mouth. It has big, sharp teeth too. This fish eats many things. It is a very hungry fish! Can you find a fish like this?
Early Reader · Change the reading level on the articleLandscape ecology
Some people study the land. They look at woods and lakes. They also look at towns. This helps us care for the earth. It helps us live well. Do you like to look at the land?
Early Reader · Change the reading level on the articleLand snail
Land snails live on the ground. They have a hard shell. The shell keeps them safe. They use slime to crawl. This helps them move on rocks. They are very slow. Can you find a snail in your yard?
Early Reader · Change the reading level on the articleLanguage development
Babies learn how to talk. They hear sounds in the womb. First, they understand what we say. Then, they use words to talk. It is fun to learn! Can you say a word?
Early Reader · Change the reading level on the articleLanternfish
Lanternfish are small fish. They live in the deep ocean. They have lights on their bodies. These lights help them hide. These fish are very important. Many big animals eat them. Can you see their lights?
Early Reader · Change the reading level on the articleLantian Man
Long ago, people lived in China. They lived in green grass. They used heavy stones as tools. These people were very old. We found their bones in the dirt. Do you want to see their tools?
Early Reader · Change the reading level on the articleLarch
The larch is a tall tree. It lives in cold places. Some trees grow in high mountains. We use its wood for boats. It is a very strong tree. Do you like big trees?
Early Reader · Change the reading level on the articleLar gibbon
The lar gibbon is a small ape. It lives in the green forest. It has very long arms. It uses them to swing from trees. They have white hands and feet. We must help keep their homes safe. Can you swing like a gibbon?
Early Reader · Change the reading level on the articleLaridae
Many birds live by the sea. Gulls and terns are in this group. They can live almost anywhere. Some fly high in the sky. They help us see how birds live. Do you like to watch birds?
Early Reader · Change the reading level on the articleLarus
These are large birds called seagulls. They live all over the world. Most have white and grey feathers. They have webbed feet for water. They use their long bills to eat. Can you spot a seagull at the beach?
Early Reader · Change the reading level on the articleLarynx
Your voice box is in your neck. It helps you make sounds. It also keeps food out of your lungs. This helps you breathe well. It is a very cool part of you! Can you hear your own voice?
Early Reader · Change the reading level on the articleLASIK
Doctors can help your eyes see better. They use a special light. This light changes the shape of your eye. It helps you see things clearly. It is a quick way to help. Do you want to see clearly?
Early Reader · Change the reading level on the articleLast universal common ancestor
Long ago, there was one tiny cell. This cell was like a great-grandparent. It was the start of all life. It lived in the warm sea. It helped make plants and animals. We are all part of its story. Can you find life…
Early Reader · Change the reading level on the articleLate Pleistocene extinctions
Long ago, many big animals died out. Some were very large. They lived in many places. This happened because of weather or people. It changed our world. Do you like big animals?
Early Reader · Change the reading level on the articleLateral line
Fish have a special sense. It is a line on their side. This line feels movement in the water. It helps them find food. It also helps them swim in a group. Do you want to see one?
Early Reader · Change the reading level on the articleLatissimus dorsi muscle
You have a big muscle on your back. It is wide and flat. This muscle helps you move your arms. It helps you pull things close to you. It helps you stay strong. Can you feel your back muscles move?
Early Reader · Change the reading level on the articleLatrodectus
Some spiders are called widow spiders. They are often black. Many have red spots. The spots look like an hourglass. These spiders live in dark spots. They make sticky webs. Do you like spiders?
Early Reader · Change the reading level on the articleLaughing dove
The laughing dove is a small bird. It is a type of pigeon. It has a long tail. It likes to eat seeds on the ground. It makes a low, soft sound. Can you hear it coo?
Early Reader · Change the reading level on the articleLauraceae
Some plants are in a big group. They can be tall trees. Some are small bushes. You can eat an avocado from them. They can even smell very good. Do you like the smell of spice?
Early Reader · Change the reading level on the articleLaziness
Sometimes we do not want to move. We may want to stay still. This can happen even if we can act. We might just want to rest. It is okay to take a break. Do you like to rest too?
Early Reader · Change the reading level on the articleLead poisoning
Lead is a type of metal. It can get into our bodies. It can be in dust or water. This can make us feel sick. It is good to stay safe. Do you know how to stay safe?
Early Reader · Change the reading level on the article