They are known for many things. They are the coldest climate, they have a very low period of reproduction which also implies that it has low biotic diversity, the organisms are usually simple when it comes to vegetation, the land is influenced by heavy frost when forming, and many many more things.
I THINK its (A) im sorry if im wrong i tried reading about it
Answer:
The answer is C hope this helps
Adaptive radiation
occur(s) when a species gives rise to many new species after colonizing a region with diverse habitats.
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