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Environment 1-2

Populations

QuestionAnswer
an approximate number estimate
counting the number of organisms in a small area then multiplying to find the number in a large area sampling
Catching some organisms, counting them, marking the ones caught, then recapturing them at a later time mark-and-recapture
observing signs of organisms to estimate populaton size indirect observation
organisms moving into a population immigration
organisms moving out of a population emigration
if birth rate is greater than the death rate population increases
if birth rate is less than the death rate population decreases
the number of individuals per unit area population density
an environmental factor taht causes a population to decrase limiting factor
the largest population that na area can support carrying capacity
limiting factors food, water, space, weather
Created by: CMoody
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