Which region has the warmest climate year round
a) midwest
b)northeast
c)northwest
d)southwest

answer; ///i believe that the correct answer is (the worksheet);

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

the answer is "a.) well–developed vascular system."

explanation:

any abiotic or biotic factor in an ecosystem that causes a population's size to slow or decrease is a limiting factor.