Which of the Following Provides the Best Evidence of a Biodiversity

Question

Which of the following provides the best evidence of a biodiversity crisis?
A)the incursion of a non-native species
B)increasing pollution levels
C)decrease in regional productivity
D)high rate of extinction
E)climate change

Accepted Answer

A high rate of extinction is the most direct evidence of a biodiversity crisis, as it indicates the loss of species diversity that is the cornerstone of biodiversity. The other choices (such as pollution, non-native species, decrease in regional productivity, and climate change) can contribute to the biodiversity crisis, but they do not necessarily prove its existence as directly as the extinction of species.