NEET BIOLOGY

Detailed explanation-1: -Water scarcity is defined as a water deficiency or a lack of safe water supplies. As the population of the world grows and the environment becomes further affected by climate change, access to fresh drinking water dwindles. Globally, 785 million people lack access to clean drinking water.

Detailed explanation-2: -Climate change, increasing water scarcity, population growth, demographic changes and urbanization already pose challenges for water supply systems. Over 2 billion people live in water-stressed countries, which is expected to be exacerbated in some regions as result of climate change and population growth.

Detailed explanation-3: -Water scarcity limits access to safe water for drinking and for practising basic hygiene at home, in schools and in health-care facilities. When water is scarce, sewage systems can fail and the threat of contracting diseases like cholera surges. Scarce water also becomes more expensive.

Detailed explanation-4: -Unsafe water sources are responsible for 1.2 million deaths each year. Unsafe water is one of the world’s largest health and environmental problems – particularly for the poorest in the world.