I've had the same question, the answer is longitude.
Answer:
Ive never taken a geography course but Im pretty sure the answer is C.
One environmental problem affecting the supply of fresh water is that groundwater is being pumped from aquifers
You have to fit in in order to be in the group
Will by when the lower air pressure gets colder it turns into cold weather
and then it is a high pressure. when the higher air pressure gets hot it
turns into a lower air pressure .
hope i help!!!!!!!!!