Una planta alta cruzada con otra enana produce aproximadamente descendencia la mitad alta y la mitad enana ¿ cuales son los genotipos de los padres ?

Ithink that b is correct but just in case wait to see if someone else answers

Ithink the dna sequences may vary but the amino acid sequences are identical. 

There's no options to. choose from

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.