Adaptation is a type of ......

Darwin's finches are an example of which phenomenon?

$A$: Placental wolf and Tasmanian wolf (a marsupial) show convergent evolution.
$R$: Like marsupials,placental mammals in other parts of the world also exhibit adaptive radiation in evolving into varieties of such placental mammals,each of which appears to be similar to a corresponding marsupial.

Which scientist explained adaptive radiation from his study on Galapagos Island?

What is common among whales, seals, and sharks?

$A$: Spotted cuscus and marsupial mole are examples of marsupial radiation.
$R$: Both are found in the Australian region.