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Chapter 7

ch 21

TermDefinition
biosphere the parts of earth and the surrounding atmosphere where there is life
community is all the populations of different species that live together in the same area at the same time
population is all the organisms of the same area at the same time
competition is the demand for resources,such as food, water, and shelter , in short supply in a community
limiting factor is anything that that restricts the size of a population
population density is the of a population compared to the amount of space available
biotic potential is the growth of a population if it could grown in perfect conditions with no limiting factors
carrying capacity a population grown until it reaches the carrying capacity of an environment as show
normal polarity state in which magnetic field reverses direction
magnetic revrsal ocurs and the magnetic field reverses direction
reversed polarity state in whitch magnetized objects would reverse direction
Created by: user-1782497
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