A niche is a specie's function in its habitat or its level on the food chain, so two species competing at the same level for the same food and habitat eventually one species will have to migrate or starve due to lack of food.
I believe it is called Human Sexual Response cycle.
The answer is B. artificial selection. Artificial selection is . a process in the breeding of animals and in the cultivation of plants by which the breeder chooses to perpetuate only forms that have certain desirable inheritable characteristics (such as, in this case, cows that produce the most milk).
Double posting doesn't really help to get responses. Its the same as before
B. The trees would not do well because they are not adapted to the freezing winter temperatures of a tundra.
