Weight loss
Your body can get smaller. This is called weight loss. You can lose fat or water. Some people do this to be healthy. It helps your body move well. Do you like to run and play?
Early Reader · Change the reading level on the articleLife Science articles — Page 29
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 29 of 116
Western honey bee
The honey bee is a busy bug. It lives in a big group. One queen bee lays eggs. Many worker bees find food. They make sweet honey for us. Do you like honey?
Early Reader · Change the reading level on the articleWest Nile fever
{ "text":\"Mosquitoes can carry a tiny germ. This germ can make people sick. Most people feel okay. Some people get a fever. You can stay safe from bites. Use nets to stay safe. Do you like being outside?\"",…
Early Reader · Change the reading level on the articleWhale
Whales are big animals that live in the sea. They swim in the deep blue water. Some whales are very large. They eat food in the ocean. Mothers care for their babies at sea. Do you like whales?
Early Reader · Change the reading level on the articleWhale shark
The whale shark is a huge fish. It lives in warm oceans. It eats tiny things in the water. It is very gentle. We can swim near them. Do you want to see one?
Early Reader · Change the reading level on the articleWhiskers
Many animals have long hairs. These are called whiskers. They help animals feel things. Whiskers help them find food. They also help them talk to friends. Do you have whiskers?
Early Reader · Change the reading level on the articleWhite blood cell
Small cells help keep you well. They live in your blood. These cells fight germs. They stop you from getting sick. They work hard for you. Do you feel strong today?
Early Reader · Change the reading level on the articleWhitefly
Whiteflies are very small bugs. They live on plant leaves. They like to eat plant juice. Some look like they have white dust on them. These tiny bugs can hurt our food. Do you see them on leaves?
Early Reader · Change the reading level on the articleWhooping cough
Some people get a very bad cough. It can make a loud whoop sound. This happens when you breathe in. It can last a long time. A shot helps keep you safe. Do you stay healthy?
Early Reader · Change the reading level on the articleWild boar
The wild boar is a big pig. It lives in many places. It can live in the woods. These pigs are the grandpas of farm pigs. They are very strong. Do you like pigs?
Early Reader · Change the reading level on the articleWildebeest
Wildebeest look like cows. They live in Africa. They eat grass on the plains. They walk in big groups. Some move to find food. They help keep the land healthy. Do you like big animals?
Early Reader · Change the reading level on the articleWildlife conservation
We help wild animals stay safe. We protect them in their homes. This keeps them from going away. It helps our world stay good. We can all help them. Do you like wild animals?
Early Reader · Change the reading level on the articleWilhelm Wundt
Wilhelm Wundt was a wise man. He studied how people think. He built a special room for his work. This room helped him learn many things. His work helps us today. Do you like to learn new things?
Early Reader · Change the reading level on the articleWilliam Harvey
William Harvey was a doctor. He studied the body. He found how the heart pumps blood. This blood moves all around you. It helps your body work. He was very smart. Do you want to learn more about the heart?
Early Reader · Change the reading level on the articleWillow
The willow is a tree. It likes to grow near water. It has many green leaves. Beavers use it for homes. It is a very helpful plant. Do you like trees?
Early Reader · Change the reading level on the articleWolf
The wolf is a big wild dog. It lives in the woods. It has thick fur. It can be grey or black. Wolves live in small groups. They are very strong. Do you like wolves?
Early Reader · Change the reading level on the articleWolverine
The wolverine is a strong animal. It lives in the cold snow. It has thick, dark fur. This fur keeps it warm. It can climb big rocks. It is very brave. Do you like the snow?
Early Reader · Change the reading level on the articleWoodlouse
The woodlouse is a small bug. It likes to live in damp spots. You can find it under a rock. It eats dead leaves to help the soil. Some can roll into a ball. Do you want to find one?
Early Reader · Change the reading level on the articleWoodpecker
Woodpeckers are birds that peck trees. They use their beaks to find food. They also drum on wood to talk. They use their tails to help them stay up. These birds help trees by eating bugs. Can you hear them drum?
Early Reader · Change the reading level on the articleWound
A wound is a hurt on your skin. It can happen fast. It can also happen slowly. Your body works to fix it. It helps you get better. Have you ever had a scrape?
Early Reader · Change the reading level on the articleWrasse
Wrasses are bright fish. They live in the sea. They eat small things. Some fish help other fish stay clean. It is fun to watch them. Do you like colorful fish?
Early Reader · Change the reading level on the articleWren
Wrens are small brown birds. They sing very loud songs. They like to eat bugs. This helps our world. They are very cute. Do you hear them sing?
Early Reader · Change the reading level on the articleXiphosura
Horseshoe crabs are old sea animals. They live in the water. They look like they did a long time ago. They have a long tail. This tail helps them flip over. Do you like looking at sea life?
Early Reader · Change the reading level on the articleYak
The yak is a big animal. It has very long hair. This hair keeps it warm in the cold. Yaks live on high mountains. They can grunt and squeak. Do you like big animals?
Early Reader · Change the reading level on the articleYeast
Yeast is a tiny living thing. It is too small to see. It helps make bread rise. It can also make bubbles in drinks. We use it in our food. Do you like bread?
Early Reader · Change the reading level on the articleYellow fever
A tiny bug can make you sick. This bug is a mosquito. It can give you a fever. You might feel bad in your body. A shot can keep you safe. Have you ever seen a mosquito?
Early Reader · Change the reading level on the articleYoung adult
Being a young adult is a big step. It happens after you are a teen. You grow and learn new things. This time helps you find your way. It can feel very exciting! Do you want to grow up too?
Early Reader · Change the reading level on the articleYucca
The yucca is a plant. It has long, pointy leaves. Some look like trees. They live in dry places. People use them for food and soap. Do you like plants?
Early Reader · Change the reading level on the articleZebra
Zebras have black and white stripes. They live in Africa. Every zebra has its own pattern. These stripes help them stay safe. They look very cool! Do you like stripes?
Early Reader · Change the reading level on the articleZoo
A zoo is a place for animals. You can go see them there. People visit to learn about them. It helps us care for them. Do you like to see animals?
Early Reader · Change the reading level on the articleZygomycota
Some fungi live in the dirt. They grow on plants or bugs. They make tiny seeds to grow more. These seeds can sleep for a long time. They help the world stay busy. Can you find them in the garden?
Early Reader · Change the reading level on the article2002–2004 SARS outbreak
A new sickness spread long ago. It moved from many places. Many people got sick. It made it hard to breathe. We must stay safe and healthy. Can you stay well?
Early Reader · Change the reading level on the article2009 swine flu pandemic
A new flu spread around the world. It started in a small town. Many people got sick with it. It can make it hard to breathe. We can stay healthy by being careful. Have you ever had the flu?
Early Reader · Change the reading level on the article2015–16 Zika virus epidemic
A tiny bug makes people sick. It is a small mosquito. The bug can fly to new places. It can make a person feel bad. It can also hurt a tiny baby. We must watch for these bugs. Do you see the white stripes?
Early Reader · Change the reading level on the articleAardwolf
The aardwolf is a small animal. It lives in Africa. It eats tiny bugs called termites. It uses a long, sticky tongue. This helps it eat a lot of food. Do you like bugs?
Early Reader · Change the reading level on the articleAaron Beck
Aaron Beck was a doctor. He helped people feel better. He studied how we think. He found ways to help sad people. His work helps many people today. Do you want to learn more?
Early Reader · Change the reading level on the articleAaron Klug
Aaron Klug was a great scientist. He used tools to see tiny things. He looked at how small life works. His work helps us learn. He won a very big prize. Do you like to look at small things?
Early Reader · Change the reading level on the articleAbalone
Abalone are sea snails. They live in the ocean. Their shells look like ears. The inside of the shell is very shiny. People use them for pretty jewelry. Do you like shiny things?
Early Reader · Change the reading level on the articleAbdominal cavity
Your body has a big space inside. It holds many parts like your stomach. These parts stay safe in this space. It helps your body work well. It is a busy place! Do you feel your tummy?
Early Reader · Change the reading level on the articleAbdominal pain
Your tummy can feel sore. It might hurt a little. It might hurt a lot. This can happen for many reasons. It helps to tell a grown-up. Do you ever have a tummy ache?
Early Reader · Change the reading level on the articleAbelisauridae
These were meat eating dinosaurs. They lived a long time ago. Some had bumps on their heads. Some even had horns! They had very small arms. They were very big. Do you like dinosaurs?
Early Reader · Change the reading level on the articleAbies alba
This is a big tree. It lives in the mountains. The leaves stay green all year. It can be a Christmas tree. It smells very good. Do you like the woods?
Early Reader · Change the reading level on the articleAbies balsamea
The balsam fir is a green tree. It grows in cold places. The tree has many needles. Animals like to eat them. We use them for Christmas trees. They smell very good! Do you like the smell?
Early Reader · Change the reading level on the articleAbies grandis
The grand fir is a big tree. It grows very tall. It stays green all year. People use it for Christmas trees. It has many needles. Do you like big trees?
Early Reader · Change the reading level on the articleAbies nordmanniana
This is a big green tree. It grows on high mountains. Its leaves are soft and green. People use it for Christmas trees. It stays green for a long time. Do you like big trees?
Early Reader · Change the reading level on the articleAbies procera
The noble fir is a very tall tree. It lives in the cool, wet woods. It has blue-green leaves that feel like needles. People like to use it for Christmas trees. It can live for a long time. Do you like big trees?
Early Reader · Change the reading level on the articleABO blood group system
People have different kinds of blood. Some have type A. Some have type B. Some have type AB. Some have type O. This helps doctors keep us safe. Do you know your type?
Early Reader · Change the reading level on the articleAbrasion (medicine)
A scrape happens to your skin. It can happen on a rough road. It might not bleed much. It can hurt a little bit. We keep it clean to help. Have you ever had a scrape?
Early Reader · Change the reading level on the article