In spite of the fact that 71% of the earth is covered with water, water is scarce. Substantiate.

Explanation

Approximately, 71 per cent of the earth.s surface is covered with it but only 3% of it is fresh water. A very small proportion of fresh water is effectively available for human use. The availability of fresh water varies over space and time. The tensions and disputes on sharing and control of this scare resource are becoming contested issues among communities, regions, and states. The assessment, efficient use and conservation of water, therefore, become necessary to ensure development.