Chemical reactions that absorb energy will not occur without a source of energy. true or false

Chemical reactions that absorb energy are called endothermic. Perhaps it is true.

✓ Chemical reactions that absorb energy will not occur without A source of energy.
✓ Chemical reactions that release energy often occur spontaneously

So basically your question's answer is True :)

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.

The correct answer is a