<em><u>A. The re-introduction of the Eastern cougar into North Carolina.</u></em>
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D) The re-introduction of the American chestnut tree, which produces many seeds, and used to live in North Carolina.
Explanation:
The re-introduction of the American chestnut tree, which produces many seeds. Carrying-capacity is determined by the amount of available food, habitat, and competition. Chestnuts would provide MORE food and INCREASE carrying-capacity.
I'm thinking A. Because uniformitarianism means the theory that changes in the earth's crust during geological history have resulted from the action of continuous and uniform processes.