Answer:
2 or 4
Explanation:
If population density increases, then the population numbers will rise.
A forest fire would destroy plants, trees and grass, which are food sources for animals. It could also destroy their habitats, and even kill or injure the animals. This would decrease the population.
A high birth rate means that there are many new animals being born. This would increase the population.
A normal rainfall means that the rainfall doesn't change. This probably would not affect the population at all.
Fewer predators means there are not as many animals around that prey on the population. Therefore, this could increase the population.
Therefore, the answer could be 2 or 4.
