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24 Cards in this Set

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What is Ecology?
The study of interactions that take place between organisms and their environment.
What is Biosphere?
The portion of the earth that supports living things.
What is Abiotic factors?
The nonliving part of an organisms environment.
What is Biotic factors?
Living organisms.
What is Population?
A group of organisms, all of the same species, which internreed and live in the same area at the same time.
What is Biological Community?
Made up of interacting populations in a certain area at a certain time.
What is Ecosystem?
Made up of interacting populations in a biological community and the communities abiotic factors.
What is Habitat?
Place where an organism lives out its life.
What is Niche?
Stratagies and adaptions a species uses in its environment.
What is Symbiosis?
Living together.
What is Mutualism?
A symbiotic relationship in which both species are benefited.
What is Commensalism?
A symbiotic relationship in which one species benefits and the other species is neither harmed nor benefited.
What is Parasitism?
A symbiotic relationship in which a member of one species derives benefits at the expense of another species.
AUTOTROPH
An organism that uses light energy or energy-stored in chemical compounds to make energy rish compounds.
HETERTROPH
An organism that does not make it's own food but feeds off of autotrophs.
DECOMPOSER
An organism that breaks down hetertroph's and makes them were other things can eat them.
FOOD CHAIN
A simple model that scientists use to show how matter and energy move through an ecosystem.
TROPHIC LEVEL
Each organism in a food chain represents a trophic level.
FOOD WEB
Shows all the possible relationships at each trophic level in a community.
BIOMASS
The total weight of living matter at each trophic level.
PRECIPITATION
The falling to earth of any form of water.
EVAPORATION
The phase change of a liquid water to a water vapor.
CONDENSATION
The process which water vapor is changed inot liquid.
TRANSPORATION
In plant the loss of water through stomata.