What is the difference between plankton, nekton and benthos?

The major difference is there habitat. Hope I helped

Hello there,
Nekton are organisms that spend most of their time in the water column and can swim freely and faster than currents. 
Plankton are organisms that live in the water column, but that either cannot swim or cannot swim faster than currents.
Benthos are the flora and fauna found on the bottom, or in the bottom sediments, of a sea or lake.
Thus, the major difference between these organisms is in their habitat.

Hope this helps :))

~Top

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.