"a type of speciation that involves the development of several species, each adapted to a specific enviornment, is called"

The correct answer is adaptive radiation.

Adaptive radiation is the process by which a single specie or single ancestral lineage, goes through several or various speciation processes and then become adaptively specialized to a specific or particular environmental or ecological place.

it's unlikely a majority of a large population would agree on issues

hope this : )

im not intirely sure but i think the anwser is d relative humidity