Question

what are the major factors responsible for water scsrcity

Answer 1

reasons for water scarcity are :
(i) Seasonal and annual variation in precipitation.
(ii) Unequal access.
(iii) Over exploitation.
(iv) Availability of water varies over space and time.
(v) Excessive use of water resources.
(vi) Many cities have large and growing population 

Answer 2

here is ur answer....
cutting down of trees
usage of water more by the people
running of water
population explosion