Question

What causes the number of births in a animal population to increase

Answer 1

In the natural world limiting factors like the availability of food, water, shelter and space can change animal and plant population

Answer 2

The conditions and the quality of life. It can often depend on the food they are given or the food they are surviving off , living conditions and how they are treated wherever their habitat is. Whether that be in the wild or whether that be in a family home.