An ecologist is carrying out a population study on songbirds in your area. Over a three-year period, the songbirds' population increases. In that time, the population's birthrate was lower than its death rate.
Explain how it can be possible for the population size to grow.

cuz he's blad

explanation:

i'm thinking (a) to keep sand in place; ////////////

explanation: a sand fence or sandbreak, like a snow fence, is used to force windblown, drifting sand to accumulate in a desired place. sand fences are employed to control erosion, sand dune stabilization, keep sand off roadways, and to recruit new material in desert areas.

yes? sounds right, but you didn’t ask a question.

the electromagnetic energy from the sun arrives in the form of visible and invisible light.