A rainforest is a forest. A lot of rain falls there. A tropical rainforest can get more than 2,000 millimeters of rain in a year. That is 79 inches. It is hot there all year. The temperature stays about the same. It stays that way from month to month.

Look up at the trees. Some rainforest trees grow as tall as 60 meters. That is 200 feet. Plants can grow on plants, too. Epiphytes are plants. They grow on other plants. A plant on a plant is an epiphyte.

Meet a frog and a sloth. Poison dart frogs live in wet forests. The forests are in Central and South America. The frogs are small, with bright colors. Most are only about 2 inches long or less. Sloths live high in the trees. Algae grow on the fur of sloths. Sloths move very slowly.

Rainforests grow on every continent except Antarctica. Tropical rainforests are in Central America. They are in South America. They are in Africa. The largest unbroken stretch is in the Amazon river basin. That is in South America. So rainforests grow in many places.

Words to know

• continent: huge land
• millimeters: tiny lengths
• epiphytes: plants on plants