Pilot whale
Pilot whales live in the sea. They like to swim in groups. They eat squid for food. They stay with their moms for life. These whales are very smart. Do you like whales?
Early Reader · Change the reading level on the articleLife Science articles — Page 91
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 91 of 116
Explore related Science Lab activities about plants, animals and ecosystems or the human body, each at five reading levels.
Pilus
Tiny germs have tiny hairs. These hairs help them stick to things. They can also help germs talk to each other. Some hairs pull the germs along. This helps them move. Do you think they are busy?
Early Reader · Change the reading level on the articlePimple
Sometimes you get a small bump on your skin. It happens when oil and skin get stuck. This can make your skin red. You can use special creams to help. It is best not to pop them. Do you have a bump on your skin?
Early Reader · Change the reading level on the articlePinaceae
Many trees belong to this group. They have needles for leaves. They also grow woody cones. These trees live in many places. They help our world stay green. Do you like to see these trees?
Early Reader · Change the reading level on the articlePinales
Pine trees are a big group. They grow in many places. They have seeds to make new trees. These trees help our world. We can see them outside. Do you like pine trees?
Early Reader · Change the reading level on the articlePineal gland
You have a tiny part in your brain. It looks like a small pine cone. This part helps you sleep. It works best when it is dark. It tells your body it is time for rest. Do you like to sleep at night?
Early Reader · Change the reading level on the articlePine squirrel
The pine squirrel is a small animal. It lives in the trees. It has a big, bushy tail. These squirrels eat seeds and plants. They live in many woods. You can see them in the wild. Do you like squirrels?
Early Reader · Change the reading level on the articlePinnidae
These are large clams in the sea. They have long, thin shells. The shells look shiny inside. Some people eat these clams. They can even make soft cloth. Do you like looking at shells?
Early Reader · Change the reading level on the articlePinus elliottii
The slash pine is a big tree. It grows in wet, swampy places. Its wood is very strong. It has long, thin leaves. These trees help the forest stay healthy. Do you like trees?
Early Reader · Change the reading level on the articlePinus halepensis
This is a pine tree. It lives in hot places. It has long, thin leaves. You can find its seeds in food. It is a very pretty tree. Do you like trees?
Early Reader · Change the reading level on the articlePinus lambertiana
The sugar pine is a very big tree. It grows very tall. It has long cones. Animals like to eat its seeds. These trees help the forest. Do you like big trees?
Early Reader · Change the reading level on the articlePinus longaeva
Some trees live for a very long time. These trees live in high mountains. They can be thousands of years old! They grow in dry, rocky places. We can learn so much from them. Do you like old trees?
Early Reader · Change the reading level on the articlePinus pinaster
This is a tall pine tree. It has long green needles. It grows big cones. The seeds have wings to fly in the wind. This helps the tree grow in new places. Do you like big trees?
Early Reader · Change the reading level on the articlePinus ponderosa
The ponderosa pine is a big tree. It grows in the mountains. It has bright green needles. The tree has thick bark. Some bark smells like vanilla. This tree is very tall. Can you find a pine tree?
Early Reader · Change the reading level on the articlePinus strobus
The white pine is a very tall tree. It lives in many forests. It gives food to birds and squirrels. This tree can live for a long time. Some trees are very old. Do you like big trees?
Early Reader · Change the reading level on the articlePinus sylvestris
This is a pine tree. It has blue-green leaves. The bark is orange-red. It can live a very long time. Some trees live for hundreds of years! Do you like big trees?
Early Reader · Change the reading level on the articlePipefish
Pipefish are small fish. They live in the sea. They have long, thin bodies. The dads help take care of the babies. It is a busy life! Do you like fish?
Early Reader · Change the reading level on the articlePiper (plant)
Pepper plants are very special. They grow in warm places. Some are small plants. Others are long vines. We use them to make food taste good. Do you like pepper on your food?
Early Reader · Change the reading level on the articlePipit
Pipits are small birds. They live in many places. They like to eat bugs. They stay on the ground. Their brown colors help them hide. Do you see a pipit?
Early Reader · Change the reading level on the articlePitaya
This is a dragon fruit. It grows on a cactus. The skin looks like scales. It can be pink or yellow. Inside, it can be white or red. It tastes sweet or sour. Do you want to try some?
Early Reader · Change the reading level on the articlePitcher plant
Some plants eat bugs. They have leaves shaped like cups. These cups hold water. Bugs fall in and drown. The plant eats the bugs for food. It is a very cool plant! Do you like bugs?
Early Reader · Change the reading level on the articlePith
Some plants have soft parts inside. This part is in the stem. It can hold food for the plant. It is often white or brown. It can even make a stem hollow. It is quite neat! Do you see soft stems?
Early Reader · Change the reading level on the articlePituitary gland
A tiny part of your brain helps you. It is like a small bean. It tells your body how to grow. It helps you stay healthy. It is very important. Do you feel big today?
Early Reader · Change the reading level on the articlePit viper
Some snakes have a special gift. They have small holes on their heads. These holes help them feel heat. They can find warm food in the dark. This helps them hunt at night. Do you think that is cool?
Early Reader · Change the reading level on the articlePlacerias
A long time ago, a big animal lived. It had a round body. It liked to eat plants near water. It had two bumps on its face. These bumps looked like tusks. Do you think it was heavy?
Early Reader · Change the reading level on the articlePlacodontia
Long ago, sea lizards lived in the water. They had big, flat teeth. These teeth helped them crush shells for food. Some even had hard plates on their backs. They lived in shallow seas. Can you imagine a lizard with…
Early Reader · Change the reading level on the articlePlacozoa
These are tiny sea animals. They look like little blobs. They do not have mouths. They eat by swallowing food. They live in the ocean. Can you find them in the water?
Early Reader · Change the reading level on the articlePlains zebra
The plains zebra has black and white stripes. They live in grassy lands in Africa. They like to eat grass all day. They stay in groups to stay safe. A leader helps keep them safe. Do you like their stripes?
Early Reader · Change the reading level on the articlePlank (exercise)
A plank is a way to move. You hold your body very still. It helps your middle stay strong. It also helps your back. This is a fun way to get fit. Can you try to hold it?
Early Reader · Change the reading level on the articlePlanthopper
A planthopper is a small bug. It looks like a leaf. It likes to eat from plants. It can hop very fast. It also walks very slow. Can you find one in a garden?
Early Reader · Change the reading level on the articlePlant litter
Dead leaves fall to the ground. They make a soft rug. This rug helps the soil. It keeps the ground cool. Tiny bugs live in it too. Do you like to walk on leaves?
Early Reader · Change the reading level on the articlePlant nursery
A nursery is a place for plants. They grow plants there. They give them water and good dirt. This helps the plants get big. Then you can buy them for your home. Do you like plants?
Early Reader · Change the reading level on the articlePlant nutrition
Plants need food to grow. They get some from the air. They get some from the soil. Roots drink up what they need. This helps them stay strong. Do you like plants?
Early Reader · Change the reading level on the articlePlant pathology
Some things make plants sick. Tiny germs can hurt a plant. Bad weather can hurt them too. We study how to keep plants well. This helps us grow good food. Do you like plants?
Early Reader · Change the reading level on the articlePlant physiology
Plants do many things to live. They use light to make food. The green parts of the leaf help. They also use water from the dirt. This helps them grow big. Do you like plants?
Early Reader · Change the reading level on the articlePlant tissue culture
We can grow plants in small jars. We use tiny bits of a plant. These bits grow in special food. This helps us make many new plants. It helps us keep rare plants safe. Do you like plants?
Early Reader · Change the reading level on the articlePlasmodesma
Plants have tiny tubes. These tubes connect cells. They help cells talk to each other. They also move food around. This helps the plant grow big and strong. Do you like looking at green plants?
Early Reader · Change the reading level on the articlePlasmodium
Tiny bugs live in the blood. They move from bugs to animals. Mosquitoes can pass them to us. This can make people sick. It is good to stay safe. Do you know what a mosquito is?
Early Reader · Change the reading level on the articlePlastid DNA
Some plants have tiny parts that make food. These parts have their own plans inside. The plans help the plant grow. This helps all plants stay healthy. We can look at them under a tool. Do you like plants?
Early Reader · Change the reading level on the articlePlatax
These fish are called batfish. They live in the ocean. They like to stay near reefs. Their bodies are very flat. This helps them swim well. Do you like looking at fish?
Early Reader · Change the reading level on the articlePlatelet
Small bits in your blood help you. They stop you from bleeding. If you get a cut, they clump together. They make a little plug. This helps you heal fast. Do you know they work hard for you?
Early Reader · Change the reading level on the articlePlateosaurus
This was a big dinosaur. It lived a long time ago. It had a long neck. It ate plants for food. It had strong legs to walk. We can find its bones in the ground. Do you like dinosaurs?
Early Reader · Change the reading level on the articlePlatybelodon
This animal was like an elephant. It had a very wide jaw. Its teeth looked like a shovel. It used its trunk to grab food. It could cut plants with its teeth. Can you imagine a shovel tooth?
Early Reader · Change the reading level on the articlePlatypterygius
This was a big sea animal. It lived in the water. It had strong teeth. It used them to eat fish. It was a very large hunter. Can you imagine a giant sea hunter?
Early Reader · Change the reading level on the articlePlecoptera
Stoneflies are small bugs. They live in clean water. They stay in streams and lakes. They help us know if water is good. We can look for them in a creek. Do you like to look at bugs?
Early Reader · Change the reading level on the articlePlesiosauroidea
These animals lived in the sea. They had very long necks. They used flippers to swim. They ate fish for food. They lived a long time ago. Do you like sea animals?
Early Reader · Change the reading level on the articlePlesiosaurus
The Plesiosaurus was a sea animal. It had a long neck. It had a small head. It used big paddles to swim. It ate clams and snails. It lived a long time ago. Do you like sea animals?
Early Reader · Change the reading level on the articlePlethodontidae
These are special salamanders. They do not have lungs. They breathe through their skin instead. This helps them live in many places. They can even catch food with fast tongues. Do you like small animals?
Early Reader · Change the reading level on the article