Question

what is water scarcity and what are its main causes?

Answer 1

water scarcity ,a lack of safe water due to arid conditions or distribution problems , is becoming a pressing need for the worlds growing population
its cause
water shortages may caused by climate changes such as altered weather patterns (including floods and drought )increased pollution human demand and over use of water

Answer 2

Water scarcity is the lack of fresh water resources to meet the standard water demand .

The causes of water scarcity are Growing population , over - exploitation and unequal distribution of water .