Pleurosauridae
These were long sea lizards. They lived a long time ago. Their bodies were like snakes. They swam in the water. They had small legs. Can you swim like a snake?
Early Reader · Change the reading level on the articleLife Science articles — Page 92
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.
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Explore related Science Lab activities about plants, animals and ecosystems or the human body, each at five reading levels.
Pleurotus
Some mushrooms are called oyster mushrooms. They grow on trees. We can eat them for food. They even help clean up oil. They are very cool! Have you seen one?
Early Reader · Change the reading level on the articlePliosauroidea
These were big sea animals. They lived in the water. They had big heads and short necks. Their teeth were very sharp. They ate fish and sharks. They are gone now. Do you like sea animals?
Early Reader · Change the reading level on the articlePloidy
Your body has tiny parts. They carry instructions for you. Most living things have two sets. We get one set from a mom. We get one set from a dad. This makes us whole. Do you have two sets too?
Early Reader · Change the reading level on the articlePlotopteridae
These birds lived in the sea. They could not fly. They used wings to swim fast. They lived a long time ago. They are gone now. Do you like birds that swim?
Early Reader · Change the reading level on the articlePlover
Plovers are small birds. They live in many places. They hunt for bugs and worms. They run and then stop to look. This helps them find food. They are very neat birds. Have you seen one?
Early Reader · Change the reading level on the articlePlymouth Rock chicken
The Plymouth Rock is a chicken. It comes from America. These birds lay brown eggs. They can live in the cold. They are easy to care for. Do you like eggs?
Early Reader · Change the reading level on the articlePneumococcal vaccine
A shot helps keep you safe. It stops bad germs from making you sick. This shot is very good for kids. It helps your body stay strong. We want everyone to be well. Do you like staying healthy?
Early Reader · Change the reading level on the articlePoales
Many plants are in this big group. Some are tall grasses. Some grow in wet spots. We eat many of them, like rice. They are all around us. Can you find some grass today?
Early Reader · Change the reading level on the articlePodiatry
Some doctors help your feet. They look at your feet and ankles. They help if your feet hurt. This helps you walk and run. It is good to have healthy feet! Do your feet ever hurt?
Early Reader · Change the reading level on the articlePodocarpaceae
Many trees stay green all year. They live far away in the south. Some are big trees and some are small. They help our world stay beautiful. We can find them in many places. Do you like green trees?
Early Reader · Change the reading level on the articlePoecilotheria metallica
This is a blue spider. It lives in tall trees. It has bright blue hair. It likes to eat bugs. We must be careful with it. Do you like blue things?
Early Reader · Change the reading level on the articlePogona
A bearded dragon is a lizard. It lives in Australia. It has a black beard. It can puff up its skin. This helps it look big. It eats bugs and plants. Do you like lizards?
Early Reader · Change the reading level on the articlePoikilotherm
Some animals change with the air. Their bodies get warm or cold. This happens when the weather changes. They do not stay the same heat. This helps them save food. It is very neat! Do you like the sun?
Early Reader · Change the reading level on the articlePoint mutation
Small changes happen in our bodies. They change the tiny parts that make us. Sometimes these changes help us. Sometimes they can make us sick. It is how we grow and change. Do you want to learn more?
Early Reader · Change the reading level on the articlePoison dart frog
Some frogs are very bright. They live in the warm rain forest. Their bright colors tell others to stay away. They get their poison from eating tiny bugs. This helps keep the frogs safe. Do you like bright colors?
Early Reader · Change the reading level on the articlePoisoning
Some things can make us sick. Bad things can get into our bodies. They can come in through our skin or what we eat. We must be very careful. Stay safe and always ask a grown-up for help. Do you know how to stay safe?
Early Reader · Change the reading level on the articlePoison ivy
Some plants can make you itchy. This plant has three leaves. It can grow as a vine. Do not touch it. It can make a red rash. It might even make bumps. Be careful when you play outside! Have you seen these leaves?
Early Reader · Change the reading level on the articlePollicipes pollicipes
The goose neck barnacle lives in the sea. It grows on rocks and wood. It eats tiny things in the water. People like to eat them for food. They are very special to find. Do you like eating seafood?
Early Reader · Change the reading level on the articlePollination management
Many bugs help plants grow. They move tiny bits of dust. This helps make food like fruit. We need these bugs to help us. It is a big job! Do you see bees in your garden?
Early Reader · Change the reading level on the articlePollock
Pollock is a fish in the sea. It lives near rocks in deep water. Some have dark backs and white bellies. We can eat this fish for dinner. It is in many stores. Have you ever eaten fish?
Early Reader · Change the reading level on the articlePolycotylidae
These were sea animals from long ago. They lived in the water. They had short necks. They also had big heads. They lived all over the world. Can you find them in a book?
Early Reader · Change the reading level on the articlePolygonaceae
Many plants are in this family. Some grow in big groups. Some are even used for food. You can eat some of them. We see them all over the world. Do you like plants?
Early Reader · Change the reading level on the articlePolylepis
These are special trees. They live high in the mountains. They grow in cold wind. The trees have many layers of bark. This bark keeps them warm. Can you find a tree with thick bark?
Early Reader · Change the reading level on the articlePolynesian rat
This is a small rat. It lives on many islands. It likes to climb trees. It eats seeds and bugs. It can be a pest. Can you find a rat?
Early Reader · Change the reading level on the articlePolyp (zoology)
A polyp is a tiny sea animal. It looks like a small tube. It has a mouth at the top. Long arms reach out to catch food. These arms help it eat. Many polyps live together in a group. Do you want to see them in the ocean?
Early Reader · Change the reading level on the articlePolysaccharide
Many tiny bits join to make long chains. These chains can be food. They can also be strong parts of a plant. They help living things grow. Some help us stay healthy. Can you find them in your food?
Early Reader · Change the reading level on the articlePolysporangiophyte
Some plants have many stems. These stems branch out. They grow small parts to make seeds. These parts are called spores. These plants help our world grow. Do you like plants?
Early Reader · Change the reading level on the articlePomacanthidae
Sea angelfish live in the ocean. They have very bright colors. Some fish are small. Some are big. They like to hide in rocks. These fish are very pretty to see. Do you like bright colors?
Early Reader · Change the reading level on the articlePomfret
Some fish are called pomfret. They live in many big oceans. These fish have white meat. People eat them for food. They are found all over the world. Do you like to eat fish?
Early Reader · Change the reading level on the articlePomology
Some people study fruit. They learn how trees grow. They help fruit taste good. This helps us have food to eat. It is very cool. Do you like fruit?
Early Reader · Change the reading level on the articlePons
Your brain has a small part called a bridge. It helps parts of your brain talk. It sends signals up and down. It helps you breathe and sleep. It even helps you taste food. This part helps you stay well. Can you feel…
Early Reader · Change the reading level on the articlePoodle
Poodles are very smart dogs. They have thick, curly hair. They can come in many colors. Some are big and some are small. They love to learn new things. Do you like dogs?
Early Reader · Change the reading level on the articlePoposauroidea
These were old reptiles. They lived a long time ago. Some walked on two legs. Some had a sail on their back. They ate plants or meat. They were very special. Do you like old bones?
Early Reader · Change the reading level on the articlePopulation bottleneck
Sometimes, many animals die out. This can happen from fires or floods. The group of animals gets very small. This makes it hard for them to stay healthy. We must help them stay safe. Can you name an animal you love?
Early Reader · Change the reading level on the articlePopulation genetics
Groups of living things change. These groups stay different from each other. Some things help them live well. This helps them grow and stay strong. It is a big, busy world. Can you see how things change?
Early Reader · Change the reading level on the articlePopulus
Poplar trees are very special. They grow in many places. Some trees have leaves that dance in the wind. Their tiny seeds fly through the air. People use the wood for paper. Do you like to look at trees?
Early Reader · Change the reading level on the articlePopulus tremula
The aspen is a tall tree. Its leaves shake in the wind. This makes a soft sound. The seeds look like white fluff. They fall like snow. The tree can live a long time. Can you see leaves shake in the wind?
Early Reader · Change the reading level on the articlePopulus tremuloides
The aspen is a tall tree. It has white bark. Its leaves shake in the wind. In the fall, the leaves turn gold. Many animals like to eat them. Do you like the gold trees?
Early Reader · Change the reading level on the articlePopulus trichocarpa
The black cottonwood is a big tree. It grows in the West. In spring, it lets out white fluff. This fluff helps the seeds fly in the wind. The seeds travel far away. It is a very cool tree! Can you find one?
Early Reader · Change the reading level on the articlePorcelain crab
This little crab lives in the sea. It hides under rocks. Its body is very flat. This helps it stay safe. It can grow back a lost leg. Can you find one at the beach?
Early Reader · Change the reading level on the articlePorcupinefish
The porcupinefish lives in the sea. It can swallow water to get big. This makes it look round. It has sharp spines too. These help it stay safe. Do you like fish?
Early Reader · Change the reading level on the articlePorphyra
This is a red seaweed. It grows in cold sea water. It lives near the shore. People eat it in many foods. It can wrap up rice. Do you like to eat seaweed?
Early Reader · Change the reading level on the articlePortia labiata
This is a jumping spider. It has very big eyes. Its eyes help it see well. It can hunt for food. It is a smart hunter. Do you like spiders?
Early Reader · Change the reading level on the articlePortia (spider)
This is a small spider. It is a smart hunter. It can plan a way to catch food. It even learns new ways to hunt. This helps the spider stay full. Do you like spiders?
Early Reader · Change the reading level on the articlePortuguese man o' war
The man o' war lives in the sea. It has a blue float. The float works like a sail. It moves with the wind. Long strings hang below it. These strings can sting. Do you like the ocean?
Early Reader · Change the reading level on the articlePortunidae
Some crabs can swim in the sea. They have flat legs like paddles. These legs help them move fast. They also have strong claws. These crabs can be very quick. It is fun to watch them! Can you find a crab?
Early Reader · Change the reading level on the articlePost-nasal drip
Sometimes your nose makes too much slime. This slime drips down your throat. It can make you cough or clear your throat. A cold might cause this. It can feel a bit funny. Do you ever feel this way?
Early Reader · Change the reading level on the article