Aclosed economy a. does not engage in international borrowing or lending. b. does not engage in international trade of goods and services. c. both a and b d. engages in international borrowing and lending.

Which theorem states that no two species competing for the exact same resources can coexist? which theorem states that no two species competing for the exact same resources can coexist? resource partitioning principle complex community network principle dominance species principle competitive exclusion principle?