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Stack #595038

Populations

QuestionAnswer
What does a population consist of? All the individuals of the same kind or species that live in a given area
Population density The number of individuals per unit of space
What processes can change the size of a population? Birth rate, death rate, immigration, emigration
Growth rate Tells how much its size has changed in one year
How do you calculate growth rate? [(births - deaths + immigration - emigration) / initial population number] x 100
What are the environmental factors affecting population growth? Food, water supply, living space, climate, competition, predators and diseases
Carrying capacity The maximum number of organisms an area can support without harming the environment
When does Steady State occur? When a population is in an equilibrium, i.e. gaining and losing individuals at the same rate
Community Organisms of different varieties living in a common area
Created by: 100001814261067
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