Increased variability in rainfall may decrease groundwater recharge in humid areas. why?
global warming will affect groundwater indirectly. how?
glaciers and snow caps fed rivers important for groundwater volumes. why?
reduction in groundwater in coastal areas big problem. why?

Answer carbon dioxide ice;

Humans have survived and thrived in mexico city by using technology to create greater access to land. when the spanish conquered the aztec capital, tenochtitlan, in the 16th century, they built mexico city by draining the lakes and filling in the lake water to create more arable land for agriculture. this technique of land reclamation has continued to be fundamental to human civilization in mexico city.