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____keep most populations in their natural habitat at a population size somewhere between extinction and overrunning the ecosystem.

PLEASE HELP!!

User Gsone
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Answer:

limiting factors

Step-by-step explanation:

The ecological optimum represents the value of the factors within the ecological valence at which the life processes of a species take place best. The upper and lower limits of an ecological valence are its maximum and minimum. Beyond these limits, physiological processes are interrupted and death occurs.

User Saul Berardo
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