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Environmental Levels

Ecology Test 1 18-1

TermDefinition
Ecology The study of the interactions of organisms with one another and with their environment
Biotic factors The living parts of the environment
Abiotic factors The nonliving parts of the environment
Examples of abiotic factors Temperature, water, air, oxygen, soil, sunlight, rocks
Individual organism 1 member of a species
Population All of the members of one species in a geographic area
Community All of the different populations of organisms that live and interact in an area; organisms in a community depend on each other for survival.
Ecosystem A community of organisms and the environment they live in; includes abiotic factors and biotic factors.
Biosphere The part of Earth where life exists
Examples of an organism 1 crow or 1 tiger or 1 oak tree
Examples of a population 10 beavers or 5 black bears or 12 pine trees
Example of a community Includes all of the populations that live in an area such as 5 oak trees, 7 pine trees, 10 sparrows, 3 black bears, 7 squirrels, and 6 monarch butterflies
Example of an ecosystem Includes all of the living and nonliving parts of a given area such as a desert, mountain, grassland, etc.
Example of a biosphere Earth - from deep in the ocean to high in the sky
Examples of biotic factors Plants, animals, protists, fungi, bacteria
Created by: lifescience2011
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