Answer:
A large community of plants and animals in a major habitat, such as a desert or a forest. Abiotic factors, such as rain, temperature and sun affect the biome drastically. If there is more rain, there will likely be more plants and animals able to live in that area. If it is hotter and sunnier, less plants and animals will be able to live in the area. Biotic factors, such as beavers in a forest can also change the biodiversity of the area. Beavers create dams which slow the movement of water. This allows other animals that can't swim against strong currents to live in the ponds and lakes the beavers make. This would be impossible if the beavers weren't there.