MicroRNA
Tiny bits in our cells help us. They tell our cells what to do. They can turn things off. This helps our bodies stay well. It is like a tiny switch. Do you want to learn more?
Early Reader · Change the reading level on the articleLife Science articles — Page 81
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 81 of 116
Explore related Science Lab activities about plants, animals and ecosystems or the human body, each at five reading levels.
Microsauria
Long ago, small animals lived on Earth. They had short tails and small legs. Some lived in the water. Some lived on dry land. We find their bones in the ground. Do you like small animals?
Early Reader · Change the reading level on the articleMicrosporidia
Tiny living things live inside animals. They are very, very small. They use a tiny tube to get inside. These little things can live in fish or bugs. They can even live in people. Do you want to see them under a lens?
Early Reader · Change the reading level on the articleMicrotubule
Tiny tubes live inside our cells. They act like strong bones. These tubes help the cell keep its shape. They also help move things around. This helps you stay healthy. Do you have tiny tubes inside you too?
Early Reader · Change the reading level on the articleMidbrain
Your brain has a middle part. It is very small. It helps you see and hear. It also helps you move. It keeps you awake. This part helps you stay alert. Do you want to learn more?
Early Reader · Change the reading level on the articleMiddle finger
The middle finger is on your hand. It sits between two other fingers. It is often the longest one. You can use it to snap. It is a part of you. Can you find it on your hand?
Early Reader · Change the reading level on the articleMidge
A midge is a tiny fly. They live in many places. Some midges bite. Many others are food for frogs. They help the world in many ways. Can you find a tiny fly?
Early Reader · Change the reading level on the articleMidwifery
A midwife helps moms and babies. They help when a baby is born. They also help the mom stay well. This job helps many families. It is a very kind job. Do you want to help people?
Early Reader · Change the reading level on the articleMimicry
Some bugs look like other bugs. A small fly might look like a wasp. This helps it stay safe from birds. The fly is not mean, but it looks scary. It is a smart trick! Can you find a bug that looks like something else?
Early Reader · Change the reading level on the articleMineral (nutrient)
Tiny bits of food help us grow. These bits are in plants and meat. They help our bones stay strong. They help our hearts work well. We get them from what we eat. Do you eat healthy food?
Early Reader · Change the reading level on the articleMiniature horse
These are very small horses. They look like big horses. They live in many places. Some help people who cannot see. They can be your friend. Do you like small horses?
Early Reader · Change the reading level on the articleMinke whale
The minke whale is a small whale. It swims very fast in the sea. It eats tiny things like krill. This whale is fun to see. It can dive deep under the water. Do you like whales?
Early Reader · Change the reading level on the articleMinnow
Minnows are small fish. They live in fresh water. Some are blue or green. People use them for bait. You can see them in streams. They are very tiny. Do you like fish?
Early Reader · Change the reading level on the articleMisgurnus fossilis
The weatherfish is a long fish. It lives in the mud. It uses tiny whiskers to find food. It can gulp air to breathe. This helps it live in many places. It is a neat little fish. Do you like looking at fish?
Early Reader · Change the reading level on the articleMissing link (human evolution)
Some people look for old bones. These bones show how life changes. They help us learn about the past. We want to see how we grew. It is like finding a lost piece. Can you find old bones too?
Early Reader · Change the reading level on the articleMitochondrial DNA
Small parts inside you make energy. They turn food into power. You get these from your mother. They help your body work well. It is like a tiny engine. Do you feel your energy?
Early Reader · Change the reading level on the articleMitochondrial Eve
We all have a family tree. Long ago, there was one woman. All people today come from her. She passed her traits to mothers. Then mothers passed them to daughters. This helps us learn about our past. Do you like…
Early Reader · Change the reading level on the articleMoa-nalo
These birds lived on islands. They looked like big ducks. They could not fly. They ate plants and leaves. They are gone now. We found their bones in the sand. Do you like big birds?
Early Reader · Change the reading level on the articleMoeritherium
This was a small beast. It lived in the water. It had short legs and a long body. It ate plants from the lake. It was a relative of the elephant. Do you like water animals?
Early Reader · Change the reading level on the articleMoggy
A moggy is a special cat. These cats do not have a set look. They can have short fur or long fur. Most cats in the world are moggies. They are very common friends. Do you like moggies?
Early Reader · Change the reading level on the articleMoisturizer
Cream helps your skin. It keeps your skin soft. It stops your skin from getting dry. This helps you feel good. It is fun to use! Do you use cream too?
Early Reader · Change the reading level on the articleMolecular cloning
Scientists can make copies of tiny parts. They use small living things to help. These tiny things grow very fast. This helps us learn about life. It helps us make new things. Do you want to learn more?
Early Reader · Change the reading level on the articleMolecular evolution
Small parts inside us change over time. These tiny changes are called mutations. They can make living things look different. These changes help us learn about life. Can you find things that change?
Early Reader · Change the reading level on the articleMolecular genetics
Tiny bits inside you hold secrets. They tell your body how to grow. These bits are like a map. They help you stay healthy. We study them to learn more. Do you want to learn too?
Early Reader · Change the reading level on the articleMolecular machine
Tiny machines live in us. They move to help us live. They help our bodies work. These machines are very small. They are smaller than you can see. Can you imagine tiny machines?
Early Reader · Change the reading level on the articleMole salamander
Mole salamanders are cool animals. They live in North America. Many stay in holes in the ground. They like to eat small bugs. This helps them grow. Do you like salamanders?
Early Reader · Change the reading level on the articleMomordica charantia
This is a vine plant. It grows long green fruit. The fruit tastes very bitter. Many people cook it for food. It can be green or yellow. Do you like bitter food?
Early Reader · Change the reading level on the articleMonal
The monal is a bright bird. The males have many colors. They eat roots and bugs. These birds are hard to find now. We must help them. Do you like bright colors?
Early Reader · Change the reading level on the articleMonarch butterfly
The monarch is a bright butterfly. It has orange and black wings. These wings help it fly far away. It flies to find warm places. We can see them in the sun. Do you like butterflies?
Early Reader · Change the reading level on the articleMongrel
Some dogs are a mix of many kinds. They do not have just one name. These dogs can be very healthy. They often live a long time. They are special friends for us. Do you have a mixed dog?
Early Reader · Change the reading level on the articleMonitor lizard
Monitor lizards are big lizards. They live in warm places. Some can swim and some can climb. Most of them eat meat. They have long necks and strong tails. Do you like lizards?
Early Reader · Change the reading level on the articleMonochromacy
Some eyes do not see colors. They see only light and dark. This looks like shades of grey. Some sea animals see this way. It helps them live in the sea. Can you see colors? We see many colors every day!
Early Reader · Change the reading level on the articleMonoplacophora
Some sea bugs have one shell. They live in the deep, dark ocean. They do not have eyes. They use a foot to move. These bugs are very old. Can you find them in the sea?
Early Reader · Change the reading level on the articleMonosaccharide
Simple sugars are very small. They are used for food. These sugars help us get energy. We need them to play and grow. They are in many things. Can you find sugar in your food?
Early Reader · Change the reading level on the articleMontane grasslands and shrublands
High hills have special land. This land has grass and small bushes. It can be wet or dry. Many plants and animals live here. They are built to live in the cold. Do you like to climb hills?
Early Reader · Change the reading level on the articleMoonrat
The moonrat is a small animal. It lives in wet forests. It likes to eat worms. It stays in dark places during the day. It has a very strong smell. Can you imagine that smell? It is a neat animal to see.
Early Reader · Change the reading level on the articleMoorhen
The moorhen is a water bird. It has a red bill. Its legs are yellow or orange. These birds swim and walk well. They eat plants and small animals. Do you like to watch birds?
Early Reader · Change the reading level on the articleMoorish idol
This fish lives in the sea. It has white and black colors. It also has bright yellow parts. It likes to eat sponges. It can live in a big group. Do you like bright fish?
Early Reader · Change the reading level on the articleMoray eel
The moray eel lives in the sea. It has a long body. It has many sharp teeth. The eel eats small fish. It is a cool fish to see! Do you like fish?
Early Reader · Change the reading level on the articleMorchella
Morels are a special kind of mushroom. They look like a honeycomb. They can be yellow or black. Some people like to eat them. You must be very careful. Do you like to look for mushrooms?
Early Reader · Change the reading level on the articleMorchella esculenta
The morel is a special mushroom. It looks like a yellow sponge. It has many small holes. You can find it in the woods. Some people like to eat them. They are very tasty! Do you like mushrooms?
Early Reader · Change the reading level on the articleMorgue
A morgue is a quiet place. It is for people who have died. The room stays very cold. This helps keep things still. It is a place for rest. Do you know about cold rooms?
Early Reader · Change the reading level on the articleMormyrinae
Some fish look like tiny elephants. They have a long nose. It helps them find food in mud. Their brains use a lot of energy. This helps them feel things in the water. It is very cool! Do you like fish?
Early Reader · Change the reading level on the articleMorpho (genus)
Morpho butterflies are very bright. They live in warm forests. Many have shiny blue wings. They look like blue mirrors. The colors help them find friends. Do you like blue butterflies?
Early Reader · Change the reading level on the articleMorphology (biology)
We can study how things look. We look at their shape and color. We also look at their bones. This helps us know all about life. It is fun to look closely. What do you see when you look?
Early Reader · Change the reading level on the articleMosasaur
The mosasaur was a big sea animal. It lived in the ocean long ago. It was like a giant lizard. It swam fast to find food. It helped the sea stay busy. Do you like big sea animals?
Early Reader · Change the reading level on the articleMosasaurus
The Mosasaurus was a giant sea lizard. It lived in the ocean long ago. It had big teeth for eating. It used paddles to swim. It was a very strong hunter. Can you imagine seeing one?
Early Reader · Change the reading level on the articleMoschidae
Some deer have long teeth. They do not have horns. These animals are small. They live in many places. They are very special. Can you find them?
Early Reader · Change the reading level on the article