Apentix/AP Environmental Science/Unit 2: The Living World: Biodiversity/Question
AP Environmental Sciencemediummcq1 pt

On an island, the number of species at equilibrium is set by the balance between

A.immigration and extinction rates
B.predation and competition only
C.birth and death of a single species
D.rainfall and temperature

Explanation

Core Concept

MacArthur and Wilson's model: immigration adds species, extinction removes them, and where the curves cross sits the equilibrium richness.

Correct Answer

Aimmigration and extinction rates

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