Unit 7&8- Ecology, Human Impact on the Environment

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20 terms

Abiotic

any nonliving component of an environment

Biotic

Pertaining to life; environmental factors created by living organisms

Competition

the struggle between organisms to survive in a habitat with limited resources

Niche

(ecology) the status of an organism within its environment and community (affecting its survival as a species)

Environment

the area in which something exists or lives

Herbivore

An organism that eats only plants

Parasite

An organism that lives off another organism

Producer

an organism that makes its own food

Deforestation

the removal of trees

Global Warming

an increase in the average temperature of the earth's atmosphere (especially a sustained increase that causes climatic changes)

Ozone Shield

the layer of ozone gas in the upper atmosphere that protects Earth from some of the Sun's radiation

Recycle

to put wastes, garbage, or the like, through a cycle of purification and conversion to useful products

Autotroph

an organism that makes its own food

Carnivore

any animal that feeds on flesh

Consumer

organism that relies on other organisms for its energy and food supply; also called a heterotroph

Ecological Succession

(ecology) the gradual and orderly process of change in an ecosystem brought about by the progressive replacement of one community by another until a stable climax is established

Food Chain

a series of steps in which organisms transfer energy by eating and being eaten

Heterotroph

an organism that cannot make its own food

Population

the people who inhabit a territory or state

Scavenger

any animal that feeds on refuse and other decaying organic matter

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