All organisms must be able to obtain nutrients from their environment. Which of the following terms describes the process of one organism killing another organism in order to obtain nutrients?

Predator or predation means the same thing

Explanation:

a predator is an organism that kills another organism for food or nutrients

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.

the real answer is b. scintillation counter