A biome is a collection of plants and animals that adapted to live in a particular environment. For example, the trees that you find in a rainforest are adapted to grow as tall as they can so they can reach the sunlight. (The rainforest floors tend to be very dark, so plants have to be grow tall to get the sunlight they need to photosynthesise.)

Examples of biomes

Here is the list of biomes you can find on Earth: