3. What has caused the reduced gene flow between the
subspecies? In other words,
why are the subspecies
mating with each other less
often?

answer: land bridge theory. land bridge theory held that shifting portions of dry land explained the finding of identical species on different continents. plate tectonic theory eventually eliminated the land bridge theory.

hey, what do you need . just post the question and i may be able to you : )

the endomembrane system i think

carbon atoms, hydrogen, oxygen, and nitrogen.