Unit 6: Interaction with the Environment
Communities of Organisms
are composed of
of different species in a particular environment.
The feeding relationships of who eats whom in a
, which comprises a
is lost in the form of
at each level.
Primary consumers (herbivores) feed on
, while higher-level consumers feed on
is an example of a
consumer in the trophic pyramid.
Frequently, there is one
species that helps maintain
within the community. An
which helps maintain the population of
The species composition in a community can change over time in a process called
succession, in which species
succession, in which both new and previous inhabitants recolonize the area. Few communities complete succession to form a
Human activity such as
can have long-lasting effects on the community and may even cause the
Mar 9, 2006