Which of the following ecologists proposed the 'rivet popper' hypothesis?

What is the term used to describe the variety in size,shape,structure,lifestyle,and other aspects of organisms living in different regions?

The biodiversity increases when one moves from the pioneer to the climax stage. What could be the explanation?

What is the true approximate percentage of the earth's land area covered by biodiversity hot spots?

Choose the incorrect pair for the Amazonian rain forest.

$A$: Taxonomic diversity represents the maximum level of species diversity.
$R$: It represents species of taxonomically different groups occurring in equal balance.