The Tropics Are Known to Have Greater Species Diversity Than

Multiple Choice

The tropics are known to have greater species diversity than the temperate zones.Which explanation for this phenomenon is the LEAST convincing?

A) Seasonal variability is less in the tropics.
B) Niches are narrower in the tropics.
C) Fewer predators in the tropics allow more prey species to flourish.
D) Greater spatial heterogeneity in the tropics creates more niches.
E) The tropics have greater plant production,which supports greater overall species richness.