The number of different species in an area is called the area’s biodiversity

One reason to preserve biodiversity is that wild organisms and ecosystems are a source of beauty and recreation. In addition, biodiversity has both economic value and ecological value within an ecosystem. Many plants, animals and other organisms are economically valuable to humans. Also, all the species in an ecosystem are connected to one another.

A keystone species is a species that influences the survival of many other species in an ecosystem.