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Maier APBio
Ecology
8
Other
Not Applicable
10/07/2007

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Term
r-selection
Definition
A population where a high reproductive rate is the determinant of life history.
Term
Density- dependent factor
Definition
any characteristic that varies in accordance to an increase in population density.
Term
density- independent factor
Definition
Any characteristic that is not affected by population density.
Term
Age structure diagram
Definition
An age structure is the number of individuals at a certain age. The diagram represents the number of people at each age.[image]
Term
Competitive exclusion
Definition
When populations of two similar species compete for the same resource that is limited, one population will use the resource more effectively and have a reproduction advantage which will eventually eliminate the other population.
Term
niche
Definition
aka ecological niche. The total of a species' use of the biotic and abiotic resources in ints environment.
Term
Greenhouse effect
Definition
The warming of Earth due to the accumulation of carbon dioxide in the atmosphere. The carbon dioxide absorbs the reflected infrared radiation and reflects some of it back to Earth.
Term
Global warming
Definition
A result of the addition of carbon dioxide to the atmosphere, where Earth's climate increases.
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