Question

diversity is determined by historical factors​

Answer 1

Ambient energy, niche conservatism, historical climate stability and habitat heterogeneity hypothesis have been proposed to explain the broad-scale species diversity patterns and species compositions, while their relative importance have been controversial.

Answer 2

In the context of electricity,the diversity factor (or simultaneity factor. ) is the ratio of the sum of the individual non-coincident maximum loads of various subdivisions of the system to the maximum demand of the complete system. The diversity factor is always greater than 1.