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chapter 3 ecology

QuestionAnswer
ecology the scientific study of interactions.
biosphere contains the combined portions of the planet in which all of life exists, including land, water, and air, or atmosphere.
species a group of organisms so similar to one another that they can breed and produce fertie offspring.-
population group of individuals that belong to the same species and live in the same area.
communities assemblages of different populations that live together in a defined area.
ecosystem is a collection of all the organisms that live in a particular place, together with their nonliving, or physical, environment.
autotroph plants, some algae, and certain bacteria can capture sunlight or chemicals and use that energy to produce food.
heterotroph organisms that rely on other organisns for their energy and food supply
food web when the feeding relationships among the various organisms in an ecosytem form a network of complex interactions
trophic level each step in a food chain or food web
biomass the total amount of living tissue within a given trophic level
Created by: victoryveronica3
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