The occupation of different niches on the open plains and woodlands of Africa by the zebras and the wildebeests is a result of niche partitioning. The zebras and the wildebeests in a common niche would compete for food, water, shelter, and space. This competition would affect the population growth of the two species by negatively affecting their reproductive capabilities. Thus, in the same habitat, the two species choose to occupy two different niches such that the competition between them is minimised. Hence they end up in separate niches.
If I eat candy then I will gain weight
If I shave my beard then it will grow back darker
With this you should be able to solve the rest :)
I think it may be conservation.
Explanation:
HIV virus is an RNA virus