Question

What are the major causes for the shortage of fresh water in many regions of the world

Answer 1

_ no proper drianage system 
_ lack of awareness
_ 

Answer 2

Some ares may have lack of fresh water sources such as rivers and lakes due to their climate and wether for example sahara desert has extreme climate as it is near to the equator while other simply donot use water in a proper manner or in other words these countries waste or pollute their fresh water sources