Phase 1: Starts with the separation between populations. Separated populations become adapted to local conditions and become genetically differentiated over time.
Phase 2: Genetic isolation is completed, reproductive isolation develops mostly in the forms of prezygotic RIMs.
I think BO or B, but BO has more chance.
It happens when the two groups become sufficiently different and the two can no longer interbreed. A known example of speciation is the London underground mosquito where it formed a new species within the existing genus. There are examples in micro-evolution but not in macro-evolution.
The answer is taiga.
Taiga is a coniferous forest located in the northern polar subarctic climate zone. What is characteristic for taiga is that winters are very long and very cold. Summers are, on the other hand, short with low temperatures. Many trees in the forest are evergreen conifers with needle-like leaves. <span>Animals have adaptations to seasonal changes by changing their fur or feather color. <span /></span>
Answer:
C) Oxygen
Explanation:
As the Earth cooled, a primitive atmosphere was created by the out-gassing of early volcanoes. The early atmosphere contained no oxygen and would have been toxic to human beings, as well as most other life on Earth today.
Hope it helps!
