Question

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Answer 1

Answer:

Explanation:

The geographical isolation is the physical separation of two populations by the geographical barriers. This occurs through adaptive radiation and allopatric speciation. The reproductive isolation is the separation of two populations of the same species, preventing interbreeding and production of a fertile offspring

Answer 2

Answer:

Explanation:

7y-5/4y+2=8/7

7(7y-5)=8(4y+2)

49y-35=32y+16

49y-32y=16+35

17y=51

y=51/17

y=3

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