What is different from the seeds of gymnosperms vs. the seeds of flowering plants? a. The seeds of gymnosperms have a thick covering
b. The seeds of gymnosperms are round
c. The seeds of gymnosperms have no covering
d. The seeds of gymnosperms are always found inside fruit
e. None of the Above

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.