Biodiversity is the diversity , the variety of life on Earth. It is diversity of animal and plant species. The value of biodiversity can be indirect and direct.
The direct value include food resources from plants and animals, medicines, fuel, wool,...
Indirect values of biodiversity on the other hand support the
existence of biological life and other
benefits which are difficult to
quantify. These include social and
cultural values, ethical values,
aesthetic values, option values and
environment service values.