An _________ is all the living and nonliving things in an area and their interactions.
ecosystem
A _________ is all the members of a species living in a certain area.
population
A _________ is all the different organisms that live and interact in an area.
community
A ________ is the way an organisms interacts with living and nonliving parts of the ecosystem.
niche
_________ is the close association of members of different species that live together.
Symbiosis
__________ is the gradual replacement of one community by another over time.
succession