Bloodhound
The bloodhound is a big dog. It has a great nose. It can smell people from far away. This helps them find lost pets. They are very kind dogs. Do you like big dogs?
Early Reader · Change the reading level on the articleLife Science articles — Page 41
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 41 of 116
Bloodletting
Long ago, doctors took blood from sick people. They thought this helped them get well. They used tools or even small worms. They did this for a very long time. It was a common way to try to help. Do you think that…
Early Reader · Change the reading level on the articleBlood orange
This orange is very special. The inside is dark red. It can taste like a sweet berry. Cold nights help make the red color. It is a fun fruit to eat. Do you like red fruit?
Early Reader · Change the reading level on the articleBlood plasma
Blood has a special part. It is a yellow liquid. This liquid helps your body stay well. It carries food and air to you. It can also help stop bleeding. Do you want to learn more?
Early Reader · Change the reading level on the articleBloodstream infection
Tiny germs can get into your blood. This can happen from a cut. It can even happen when you brush your teeth. Your body works to fight them. Doctors use medicine to help you. Do you feel well today?
Early Reader · Change the reading level on the articleBlood vessel
Tiny tubes carry blood in your body. They move food and air to you. They also take away waste. This helps you stay well. It is a busy job! Can you feel your heart beat?
Early Reader · Change the reading level on the articleBlue eared pheasant
This is a big bird. It lives in the woods. It has red skin on its face. It eats berries and plants. It has long white feathers by its eyes. Can you see the red legs? It is a pretty bird.
Early Reader · Change the reading level on the articleBlue Java banana
This is a special blue banana. It looks blue when it is young. The fruit tastes like sweet vanilla. It feels soft like ice cream. You can eat it fresh. Would you like to try one?
Early Reader · Change the reading level on the articleBlue shark
The blue shark lives in the sea. It has a blue body. It swims a long way to find food. They eat small fish and squid. These sharks are very cool. Do you like sharks?
Early Reader · Change the reading level on the articleBlue spruce
The blue spruce is a tall tree. Its needles look blue or green. They are very sharp. This tree likes wet soil. It can grow in the cold too. Do you like big trees?
Early Reader · Change the reading level on the articleBlushing
Sometimes your face turns red. This can happen when you feel shy. It may happen when you feel mad. It shows how you feel inside. We cannot stop it from happening. Do you blush when you are shy?
Early Reader · Change the reading level on the articleBoa constrictor
The boa is a large snake. It lives in the warm jungle. It has brown spots on its skin. This helps it hide in the trees. It can swim in rivers, too. Do you like snakes?
Early Reader · Change the reading level on the articleBobcat
The bobcat is a wild cat. It has a short tail. It lives in many places. It likes to hunt for food. It is a very good climber. Do you like cats?
Early Reader · Change the reading level on the articleBody (biology)
A body is what makes you. It is the physical part of a living thing. It can be a plant or an animal. Your body helps you move and grow. It is very amazing to see. Do you know how your body works?
Early Reader · Change the reading level on the articleBody cavity
Your body has many small spaces inside. These spaces hold your parts. They keep your heart and lungs safe. These spaces also hold soft liquid. This liquid helps your parts move. It is good to learn about your body!…
Early Reader · Change the reading level on the articleBody fluid
Your body is full of liquid. Most of it stays inside your tiny cells. Some of it is in your blood. This helps your body work well. It is very important. Do you feel thirsty today?
Early Reader · Change the reading level on the articleBody hair
Most of your body has hair. It is very soft and light. As you grow up, it changes. Some hair gets darker and thicker. This helps you feel things in the air. Do you have hair on your arms?
Early Reader · Change the reading level on the articleBody odor
All animals have a scent. It can tell a story. It can help us find family. It can also help us stay safe. Do you know your own smell? It is part of you!
Early Reader · Change the reading level on the articleBone marrow
Soft stuff lives inside your bones. It makes your blood. This blood helps you live. It is very important for you. Do you feel strong today?
Early Reader · Change the reading level on the articleBone tumor
Sometimes a lump grows in a bone. It might feel hard. It can cause pain. Some lumps are not bad. Others can be sick. Doctors use special pictures to see them. Can you feel your own bones?
Early Reader · Change the reading level on the articleBonito
Bonitos are fish. They live in the sea. They like to hunt for food. Some people eat them for dinner. They are very pretty fish. Do you like fish?
Early Reader · Change the reading level on the articleBooby
A booby is a sea bird. It lives near the ocean. It dives deep to find fish. It has special skin to help it land. These birds lay blue eggs. They are very neat to see. Do you like sea birds?
Early Reader · Change the reading level on the articleBorage
The starflower is a pretty plant. Its flowers are blue. Some flowers are pink or white. The leaves feel hairy. You can eat the flowers. They taste sweet. Do you like blue flowers?
Early Reader · Change the reading level on the articleBoraginaceae
Some plants have pretty flowers. They can be blue or pink. Many have fuzzy leaves. These hairs can make your skin itch. Bees like to visit them. Do you like blue flowers?
Early Reader · Change the reading level on the articleBorassus flabellifer
The palmyra palm is a big tree. It grows in warm places. It has sweet fruit to eat. People use the leaves for many things. It is a very helpful tree. Do you like sweet fruit?
Early Reader · Change the reading level on the articleBordetella pertussis
Tiny germs can make you sick. These germs live in our bodies. They can cause a bad cough. This cough makes a whooping sound. It can be hard to breathe. We must stay healthy. Do you know how to stay well?
Early Reader · Change the reading level on the articleBoreal forest of Canada
Canada has a very big forest. It has many tall trees. Most trees have needles. These trees stay green. The forest is a home for many animals. Do you like to walk in the woods?
Early Reader · Change the reading level on the articleBoredom
Sometimes we feel bored. This means we have nothing to do. It can feel a bit bad. But being bored helps us think of new ideas. It can even help us be creative. Do you ever feel bored?
Early Reader · Change the reading level on the articleBornean bearded pig
This pig has a big beard. It lives in the green woods. It lives with its family. Some big snakes may hunt it. We can learn about this pig. Do you like pigs?
Early Reader · Change the reading level on the articleBornean orangutan
The orangutan is a big ape. It has red hair. It lives in the trees. It eats fruit and seeds. We must help them stay safe. Do you like red apes?
Early Reader · Change the reading level on the articleBorneo lowland rain forests
Big green forests grow on a large island. Many plants and birds live there. Big elephants and orange apes roam the trees. This place is very special. We must help keep it safe. Can you name a forest animal?
Early Reader · Change the reading level on the articleBorophagus
This was a type of old dog. It lived a long time ago. It had very strong jaws. It could crunch on bones for food. It was built much like a coyote. Can you imagine such a strong dog?
Early Reader · Change the reading level on the articleBorrelia
Tiny germs live in the wild. They can move like a corkscrew. Ticks and lice carry them to us. These germs can make us sick. We must be careful outside. Do you like to explore nature?
Early Reader · Change the reading level on the articleBorzuya
A long ago doctor lived in a far land. He went on a trip to India. He looked for a special plant. He found a great book instead. He wrote the book in his own way. This helped many people learn. Do you like to read books?
Early Reader · Change the reading level on the articleBotanical garden
A plant garden is a special place. It has many living plants. Some plants live in glass houses. These gardens help us learn. We can see new things there. Do you like plants?
Early Reader · Change the reading level on the articleBothriolepis
This was a fish from long ago. It had hard armor on its head. It lived on the bottom of the water. It ate bits of mud and plants. It helped us learn about old life. Can you imagine a fish in armor?
Early Reader · Change the reading level on the articleBottlenose dolphin
The bottlenose dolphin is a smart sea animal. It lives in warm water. It can jump high in the air. It uses sound to find food. These animals are very fun to watch. Do you like dolphins?
Early Reader · Change the reading level on the articleBougainvillea
This plant has bright colors. It grows on vines. Some parts look like paper. It has sharp thorns too. These plants love the sun. Do you like bright flowers?
Early Reader · Change the reading level on the articleBoverisuchus
This was a land animal. It lived long ago. It had long legs for running. It had sharp teeth for eating. It did not live in water. It was like a fast runner. Can you imagine a running croc?
Early Reader · Change the reading level on the articleBovine spongiform encephalopathy
Some cows get very sick. They may have trouble walking. They may also act strange. This can happen to them from bad food. It is good that we watch our food. Do you like cows?
Early Reader · Change the reading level on the articleBowerbird
Some birds are very busy. They build little homes with sticks. The males find bright things to decorate them. They use shells and colorful leaves. This helps them find a mate. Do you like bright colors?
Early Reader · Change the reading level on the articleBowfin
The bowfin is a cool fish. It lives in rivers and lakes. It can breathe air from the top of the water. This helps it stay alive. It has a long fin on its back. Do you like fish?
Early Reader · Change the reading level on the articleBowhead whale
The bowhead whale lives in cold water. It has a very big head. This head helps it break ice. These whales can live a long time. They can live for over 200 years! Can you imagine being that old?
Early Reader · Change the reading level on the articleBox jellyfish
The box jellyfish looks like a box. It lives in the warm ocean. It has long strings on its corners. Some can sting you. You must be careful in the water. Do you like the sea?
Early Reader · Change the reading level on the articleBrachiopod
These are sea animals with shells. They live in the ocean. The shells protect them. They use tiny arms to eat. Some have a little stalk to hold on. They are very cool! Can you find them in the sea?
Early Reader · Change the reading level on the articleBrachiosaurus
The Brachiosaurus was a huge dinosaur. It lived a long time ago. It had a very long neck. It could reach high leaves to eat. Its arms were very long too. Can you imagine a dinosaur that big?
Early Reader · Change the reading level on the articleBrachypelma hamorii
This is a large spider. It lives in Mexico. It has orange rings on its legs. It stays in a hole in the ground. This helps it stay safe. Do you like spiders?
Early Reader · Change the reading level on the articleBracken
Bracken is a big fern. It grows in many places. It has large green leaves. Some people eat the young parts. It can be bad for animals. Do you like ferns?
Early Reader · Change the reading level on the article