The phenomenon whereby the earth's atmosphere traps solar radiation, due to the presence of various atmospheric gases such as carbon dioxide, water vapor, and methane that allow incoming sunlight to pass through but absorb heat radiated back from the earth's surface.
Incoming solar radiations have shorter wavelength thus more penetrating power so they can reach the surface easily but the outgoing infrared radiations with higher wavelength possess less penetrating power. Hence outgoing radiations cannot escape the atmosphere and get trapped by the atmospheric gases. This increases the atmospheric temperature.
The natural greenhouse effect is important so as to maintain the temperature of earth’s surface to support the life.
Any change in physical biological and chemical properties of water is known as water pollution.
Water pollution can also be defined as the addition of unwanted particles or removal of important components from the water due to manual or natural processes.
Causes:
Components that lead to water pollution are known as water pollutants. They arise from different sources.
