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20 terms

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

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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