Given a scientific question, generate a correct answer to it.

[EX Q]: What phenomenon makes global winds blow northeast to southwest or the reverse in the northern hemisphere and northwest to southeast or the reverse in the southern hemisphere?
[EX A]: coriolis effect

[EX Q]: What is fluid friction with air called?
[EX A]: air resistance

[EX Q]: Biomass can also be processed to make what kind of fuel?
[EX A]:
biofuel