of something, so biodiversity is the variety of different plants and animals in the world or in a particular habitat or ecosystem.
What is an ecosystem?
An ecosystem is a community of living things, animals and plants, that interact with each other and the environment in which they live. These are in perfect natural balance, with the living things in each ecosystem all having a perfect role to play. If these systems become unstable as the biodiversity changes within them, there can be negative consequences.
Like what?
For example, farmers in America killed coyotes because they were attacking their cows. However, fewer coyotes meant the numbers of the animals they ate, such as deer mice, became too high. Deer mice carry an infectious disease. This disease was passed to humans as the deer mice spread into homes and buildings.