Interpret the block diagram seen here. arranging the letters from oldest to youngest, the order should be
a) a, c, b, d, e, f, h, g
b) a, b, d, e, c, h, f, g
c) a, b, c, d, e, f, g, h
d) g, f, h, c, e, d, b, a

Cbecause it is the only one describing a habitat

Iwould say overuse ( but not 100% sure ) in the u.s. we tend to overuse water by leaving it running, throwing it away, taking long showers, etc.

Ibelieve the answer is relative humidity  because it makes more sense that way. solar flares usually occur in space it doesn't affect the earth, well it could but it wont make a significant damage.  latitude is land it doesnt do anything. prevailing winds, i dont know the correct meaning for this but i doubt that affects the land so it has to be relative humidity.