When two or more rescuers are administering cpr to a child, they should give rescue breaths every?

When giving CPR to an adult, how far should you press down with each compression? 1 1/2 ... What is the compression-ventilation ratio for a two man rescuer infant or child CPR? 15:2  Every time therescuer opens the airway to deliver rescue breaths, the rescuer should look into the mouth and remove the object if seen

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.