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Answer:
Adaptive Radiation
Explanation:
Adaptive radiation refers to an evolutionary process in which organisms diversify from one ancestral species, which leads to different other forms and species. This tends to happen when organisms are pressured to adapt to a new environment.
Australian terrestrial mammals such as kangaroos, koalas, and wombats, are examples of this process. According to research, these iconic marsupials went through adaptive radiation in response to the expansion of grassland that occurred in the mid-Pliocene. Another example (the most famous one) is the case of Darwin's finches, which all evolved from a single species but then changed in response to their environment.
