Answer:
Tundra
Explanation:
Permafrost is a layer just beneath the surface of the ground that never thaws.
Correct answer: A) bio-geographic isolation affects the random changes that take place within gene pools
The bio-geographic isolation of the species takes place when the geographical barrier work as a distinguishing agent. It takes place when the group of animals, plants and other creatures are not allowed to mate with each other.
The mixing of there genes within the same species is separated by the geographical barrier.
The barrier allows the mating of the species in a different way as compared to the previous one.
I believe the answer is A
Answer:
because their expantion is faster
Explanation:
Answer:
Hypothalamus
Explanation:
It maintains the process that leads the activation of wakefulness or alertness of the cerebral cortex
