The Equilibrium Number of Species on an Island

Question

The equilibrium number of species on an island
A) occurs when the extinction rate reaches zero.
B) is independent of island size.
C) occurs when immigration equals extinction.
D) occurs when no more species are able to immigrate.
E) none of the above

Accepted Answer

The equilibrium number of species on an island is reached when the rate of immigration of new species equals the rate of extinction of existing species, according to the theory of island biogeography.