Water—The Essence of Life - Water Conservation and Responsible Use

Water is the 'Essence of Life' and is required by all living organisms for survival. The Earth's surface is covered by approximately $71\%$ water.

Water Distribution: Only about $2.5\%$ to $3\%$ of Earth's water is freshwater. Out of this, less than $1\%$ is accessible for human use as most is locked in glaciers and ice caps.

The Water Table: This is the upper level of the underground zone where the soil or rocks are permanently saturated with water. Excessive pumping leads to the depletion of the water table.

Rainwater Harvesting: A method of collecting and storing rainwater from rooftops and land surfaces to recharge groundwater levels or for immediate use.

Drip Irrigation: A modern agricultural technique that uses narrow tubes to deliver water directly to the base of plants, minimizing wastage by ensuring $Rate_{evaporation}$ is low.

Chemical Composition: One molecule of water is formed by the bonding of $2$ Hydrogen atoms and $1$ Oxygen atom, chemically represented as $H_2O$.

Responsible Use: Conservation practices include fixing leaky taps, using a bucket instead of a hose for washing cars, and turning off the tap while brushing teeth.