AP Environmental Sciencehardmcq1 pt
In species–area relationships, doubling island area typically
A.increases, but does not double, species richness
B.exactly doubles species richness
C.halves species richness
D.has no effect
Explanation
Core Concept
Richness rises with area but at a diminishing rate (often S = cAᶻ with z ≈ 0.2–0.3) — not a linear doubling.
Correct Answer
Aincreases, but does not double, species richness
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