The variety of life in an area that is determined by the number of different species in that area is what?

 The number of different species and the relative abundance of each species in a biological community is what?

_______ is the gradual process by which a species goes extinct.

_____ is the separation of an ecosystem into small pieces of land

______ is the increasing concentration of toxic substances in organisms as trophic levels increase in a food chain or web.

______ occurs when fertilizers, animal aste, sewage, or other substances rich in nitrogen and phosphorus flow into waterways causing algae growth

 _______ is the number of different species and the relative abundance of each species in a biological community.

 _______ is the variety of ecosystems that are present in the biosphere

 ______ are resources that are replaced by natural processes faster than they are consumable