Iguanodon
The Iguanodon was a big dinosaur. It was very large. It ate plants for food. It had big spikes on its thumbs. These spikes helped it stay safe. Do you like big dinosaurs?
Early Reader · Change the reading level on the articleLife Science articles — Page 16
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 16 of 116
Ilish
The ilish is a silver fish. It lives in the sea and rivers. Many people love to eat it. It is a very special food. Do you like fish?
Early Reader · Change the reading level on the articleImagination
You can make pictures in your mind. This is called imagination. It helps you play make-believe. You can think of new things. It helps you learn too. Do you like to pretend?
Early Reader · Change the reading level on the articleImago
An insect grows in stages. It changes as it gets big. The last stage is the adult. This is when it can fly. It is also when it can have babies. It is a big change! Do you like bugs?
Early Reader · Change the reading level on the articleImmunology
Your body has a way to stay well. It fights off bad things. It works hard to keep you safe. This helps you stay strong. Do you feel good today?
Early Reader · Change the reading level on the articleImpala
The impala is a fast animal. It lives in Africa. It has a brown coat. The males have long horns. They can jump very high. This helps them stay safe. Do you like to jump too?
Early Reader · Change the reading level on the articleImpatiens
Some plants have a fun trick. They have seeds in little pods. When the pods get ripe, they pop! They shoot seeds far away. This helps new plants grow. Can you find a plant that pops?
Early Reader · Change the reading level on the articleInflammation
Your body works hard to stay safe. If you get a boo-boo, it may get red. It might feel hot and puffy too. It may even hurt a little bit. This helps your body fix itself. Do you feel better soon?
Early Reader · Change the reading level on the articleInstinct
Some animals know what to do. Baby turtles move to the sea. They do not need to learn. A dog shakes off water too. These things happen all on their own. It helps them stay safe. Do you see this in pets?
Early Reader · Change the reading level on the articleInsulin
Your body has a special helper. It helps you use food for energy. It moves food from your blood into your cells. This keeps you strong and healthy. Do you want to learn more?
Early Reader · Change the reading level on the articleIntegumentary system
Your skin covers your whole body. It keeps you safe from germs. It also helps you feel heat and cold. Skin helps keep the right amount of water inside you. It is a very big part of you. Do you feel your skin now?
Early Reader · Change the reading level on the articleInvasive species
Some plants and animals move to new homes. They can hurt the land. They take food from other living things. This makes it hard for old friends to live there. We must help our world stay safe. Can you help plants and…
Early Reader · Change the reading level on the articleInvertebrate
Most animals have no backbone. They can be very small. Some are very big too. They live all over the world. We see them every day. Do you like bugs?
Early Reader · Change the reading level on the articleIridaceae
Many plants belong to one big family. They have leaves that look like grass. Some of these plants grow bright flowers. You might see them in a garden. They can grow in many places. Do you like pretty flowers?
Early Reader · Change the reading level on the articleIris (plant)
The iris is a pretty flower. It can be many colors. Some have fuzzy hairs on them. These flowers grow in gardens. They look like a rainbow. Do you like flowers?
Early Reader · Change the reading level on the articleIvan Pavlov
Ivan Pavlov was a smart man. He studied how bodies work. He looked at how dogs eat. He won a big prize for his work. He helped us learn about life. Do you like to learn new things?
Early Reader · Change the reading level on the articleIvory
Ivory is a hard, white stuff. It comes from animal teeth. Some ivory comes from big elephants. People use it to make art. It can make pretty things. Do you like art?
Early Reader · Change the reading level on the articleJackal
A jackal is a wild dog. They live in Africa and Asia. They like to run for a long time. They eat many kinds of food. They often work in pairs. Do you like wild dogs?
Early Reader · Change the reading level on the articleJackfruit
The jackfruit is a very big fruit. It grows on a tree. Some people eat it for a sweet snack. It can even taste like meat! It is a tasty treat. Do you like sweet fruit?
Early Reader · Change the reading level on the articleJacques Cousteau
Jacques Cousteau loved the sea. He helped make a way to breathe underwater. This let him see fish and plants. He made movies about the deep blue water. He wrote many books, too. Do you like the ocean?
Early Reader · Change the reading level on the articleJaguar
The jaguar is a big cat. It has many dark spots. These spots help it hide in the trees. It can swim in the water, too. This cat is very strong. Do you like big cats?
Early Reader · Change the reading level on the articleJames Watson
James Watson was a man who studied life. He found how our tiny parts work. This helps us learn about our bodies. He worked with a friend to find a big secret. It looks like a twisted ladder. Do you like to learn…
Early Reader · Change the reading level on the articleJane Goodall
Jane Goodall loved animals. She lived in Africa. She watched wild chimps every day. She saw them use tools. This helps us learn about them. Jane helps keep animals safe. Do you love animals too?
Early Reader · Change the reading level on the articleJaw
Jaws help us eat. They are at the mouth. Most animals have them too. They help grab food. They can also help us breathe. Jaws are very useful! Do you use your jaws to chew?
Early Reader · Change the reading level on the articleJean-Baptiste Lamarck
Lamarck was a man who loved nature. He studied plants and animals. He wanted to know how life changes. He wrote many books about it. His ideas helped us learn. Do you like to study nature?
Early Reader · Change the reading level on the articleJellyfish
Jellyfish live in the sea. They have soft bodies. Their bodies look like bells. Long arms hang down. These arms can sting. This helps them catch food. They have been here a long time. Do you like the sea?
Early Reader · Change the reading level on the articleJohn B. Watson
John was a man who studied how we act. He wanted to know why we do things. He looked at how animals move and learn. This helped him learn a lot about people. He was a very famous teacher. Do you like to watch how…
Early Reader · Change the reading level on the articleJohn James Audubon
John James Audubon loved birds. He drew many birds in books. He looked at them in nature. His art helps us see them. Do you like to watch birds?
Early Reader · Change the reading level on the articleJohn Muir
John Muir loved the woods. He liked to look at plants. He also liked to look at mountains. He helped keep big parks safe. This helps us see nature today. Do you like to walk in the woods?
Early Reader · Change the reading level on the articleJohn Snow
John Snow was a kind doctor. He helped sick people feel better. He found a bad water pump. This helped keep people safe. He was a great helper. Do you like to help others?
Early Reader · Change the reading level on the articleJoint
Your bones connect at places called joints. These spots help you move. They let you run and jump. Some joints help keep your brain safe. They help you stay strong. Can you move your arms and legs?
Early Reader · Change the reading level on the articleJonas Salk
Jonas Salk was a smart man. He worked in a lab. He made a way to stop a sick feeling. This helped many children stay well. It was a big win for us. Do you like to help people?
Early Reader · Change the reading level on the articleJoseph Banks
Joseph Banks loved plants. He went on big ships. He saw many new things. He found new plants in far lands. He helped a big garden grow. He was a great helper. Do you like plants too?
Early Reader · Change the reading level on the articleJoseph Dalton Hooker
Joseph was a man who loved plants. He traveled far to find them. He went to cold places and high mountains. He found many new kinds of flowers. He even helped his friend Charles Darwin. Do you like to look at flowers?
Early Reader · Change the reading level on the articleJoseph Lister
Joseph Lister was a doctor. He helped people stay safe. He found tiny germs. These germs can make wounds bad. He used a special wash to clean things. This helped many people get well. Do you like to stay clean?
Early Reader · Change the reading level on the articleJumping
Jumping is moving through the air. Animals use their legs to push. Some use water to push too. It helps them move fast. It can help them stay safe. Can you jump high?
Early Reader · Change the reading level on the articleJuncus
Rushes are green plants. They like wet places. They grow in many lands. Many bugs and birds live there. They help clean the water. Do you like wet places too?
Early Reader · Change the reading level on the articleJungle
A jungle is a thick forest. It has many tangled plants. It is hard to walk through. The plants grow very close together. This makes it hard to move. Do you like to explore?
Early Reader · Change the reading level on the articleJuniper
Junipers are special plants. They can be small bushes or tall trees. They have green leaves that stay all year. Some have blue berries that smell good. You might see them in a park. Do you like looking at trees?
Early Reader · Change the reading level on the articleKangaroo
Kangaroos live in Australia. They have big, strong back legs. They use these legs to hop. Mothers have a pouch for their babies. The babies stay safe inside. Do you like to hop too?
Early Reader · Change the reading level on the articleKaziranga National Park
Kaziranga is a big park in India. Many rhinos live there. Large elephants and buffalo live there too. The park has tall grass and rivers. It is a safe home for animals. Do you like big animals?
Early Reader · Change the reading level on the articleKidney
You have two kidneys. They look like little beans. They clean your blood. They help make pee. This keeps you healthy. Do you know where they are?
Early Reader · Change the reading level on the articleKingdom (biology)
Life is split into groups. These groups are called kingdoms. Some are plants. Some are animals. There are even tiny things we cannot see. This helps us learn about all living things. Do you like animals or plants?
Early Reader · Change the reading level on the articleKiwi (bird)
The kiwi is a bird. It lives in New Zealand. It cannot fly. It uses a long beak to find food. It has a very big egg. We love this bird! Do you like the kiwi?
Early Reader · Change the reading level on the articleKiwifruit
Kiwifruit is a yummy fruit. It grows on vines. The skin can be fuzzy. Inside, it is green or gold. It has tiny black seeds. Do you like to eat kiwi?
Early Reader · Change the reading level on the articleKoala
The koala lives in trees. It lives in Australia. It eats leaves for food. The leaves help it grow. Most koalas sleep a lot. They sleep in the trees. Do you like koalas?
Early Reader · Change the reading level on the articleKohlrabi
Kohlrabi is a round plant. It looks like a big ball. You can eat the stem. You can eat the leaves too. It tastes sweet and crunchy. It is good in a salad. Do you like crunchy food?
Early Reader · Change the reading level on the articleKoi
Koi are pretty fish. They live in ponds. These fish have many bright colors. You can see red, white, and gold. They look like moving art. Do you like bright colors?
Early Reader · Change the reading level on the article