During energy transformations, not all energy transformed is transformed to a(n)
form of energy.
convection
efficient
usable
work

the correct answer, according to e2020, is the second choice there is an occluded front in region a and a cold front in region b.

i think that it is plants

i think that is new experiments yield untrustworthy data and should be carefully considered, because you don't know what will happen with the experiments.