A. they arose out of Africa less than 200,00 years ago
If vegatation were to decrease then primary consumers that are herbivores which are usually the prey will start to decrease too, because there food source is becoming limited. It's like a domino effect, if something is unbalanced in the ecosystem then the whole ecosystem could collapse.
Answer:
hmm, maybe peppa and sven
Explanation:
Answer:C
Explanation:if the few surviving amphibians reproduce and their young ones too survives, then it is genetic drift
