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ECOLOGY
Ecology
Study of interactions between
organisms and their environment
Species
Organisms that can breed
with one another and produce
fertile offspring
Population
Group of individuals of
the same species that live
in the same area
Community
Groups of different
populations that live
together in a given area
Autotroph
An organism that makes
its own food
Heterotroph
An organism that cannot
make its own food and
must eat
Trophic Level
A feeding step in a food chain or web
Biomass
Total amount of living
tissue
Chemosynthesis
Process in which organisms
produce food using inorganic
chemicals
Limiting Nutrient
A chemical that restricts or
slows the growth of organisms
in an ecosystem