Pollution is defined as an undesirable change in the physical, chemical, or biological characteristics of air, water, and other resources that can harm humans and other living organisms. There are several types of pollution including air, light, marine, noise, radioactive contamination, soil contamination, ship pollution, thermal pollution, and visual pollution.

2. POLLUTIO
N
Pollution is an undesirable change
in the physical ,chemical or
biological characterstics of
air,water etc. that can be harmful
for health survival or activities of
humans or other living organisms.

3. TYPES OF POLLUTION
Air pollution
Light pollution
Marine pollution
Noise pollution
Radioactive
contamination
Soil contamination
Ship pollution
Thermal pollution
Visual pollution