Rainforests provide homes for the greatest variety of wildlife found anywhere in the world.
There may be hundreds of different types of insect living on one tree. Most of the world's Rainforests are in the southern hemisphere. Rainforests grow in the hot wet lands near the equator. The biggest Rainforest of all is in Brazil and is called the Amazon. The Amazon Rainforest is in Brazil and covers an area of 5 million sq km.