First 99 words of the document:
All the populations of the different species of
organisms living in a habitat. !
(A habitat is the place where an organism !
lives such as a stream, tropical rainforest or!
A life-supporting environment. It includes
all of the living organisms which interact
together, the nutrients that cycle through
the system, and the physical and chemical
environment in which organisms are living.
A group of organisms of the same species, living
and breeding together in a habitat.