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A human population. A zebra population. A fern population. Populations interact within themselves. http://www.youtube.com/watch?v=pLdGfO1hoJk. Populations compete amongst themselves for resources. This is called intraspecific competition.
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Populations interact within themselves • http://www.youtube.com/watch?v=pLdGfO1hoJk
Populations compete amongst themselves for resources This is called intraspecific competition