What is the main role of the plant vacuole?

Vacuoles are membrane-bound sacs within the cytoplasm of a cell that function in several different ways. In mature plant cells, vacuoles tend to be very large and are extremely important in providing structural support, as well as serving functions such as storage, waste disposal

Explanation:

as resources become scarce because of population growth, the growth decreases after few years due to lack of resources and food.