Write a letter of the cell organelle next to its function

Answer -
(Eukaryotes)
Nucleus (N)
The nucleus function is the control and command center.

Reason - This is too obvious. I picked eukaryotes because it's basic cells for animilia. The nucleus is simple because it's obviously also a command and control for all common cells.

A) early horses is your answer

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.