Which antibiotic must be injected into muscle and must diffuse into his bloodnpenikill'em or azithrolyse'em

Milk is the antibody

                                                  

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.