Which of these conditions is most responsible for earth having an environment that supports life?

Oceans regulating climate on land.

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.

b. read the phase at the intersection of any given temperature and pressure.