Sunday, September 6, 2015

21. Population



Population is a group of organisms of the same species that live in the same area at the same time and interbreed. Populations can rapidly increase if resources and environmental surroundings meet their needs. The group of fish in this picture is an example of population. They are the same species, live in the same tank and would have traveled in groups if they were in the ocean. The fish depend on the same resource and are influenced by the same factors in the environment.


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