When you have a many different plants and animals living in one place, you have biodiversity. The Amazon rain forest is rich in biodiversity.
Biodiversity is a shortened form of two words: biological diversity. Biological refers to the study of life forms; diversity means many and different. Construction, pollution, and climate change threaten many different species of plants and animals — these developments threaten biodiversity. Scientists know that the earth's health is related to biodiversity, and one of the main missions of the environmental movement is preserving biodiversity.