Question

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Write a note on pollution.

Answer 1

Adding harmful substances to our environment is called pollution. All living beings and non living beings around us together form our environment but many hunab activities have spoilt the environment. Pollution is the introduction of contaminants into the natural environment that cause adverse change. Pollution can take the form of chemical substances or energy, such as noise, heat or light. Pollutants, the components of pollution, can be either foreign substances/energies or naturally occurring contaminants.

Answer 2

Answer: Pollution is the introduction of contaminants into the natural environment that cause adverse change.[1] Pollution can take the form of chemical substances or energy, such as noise, heat or light. Pollutants, the components of pollution, can be either foreign substances/energies or naturally occurring contaminants. Pollution is often classed as point source or nonpoint source pollution. In 2015, pollution killed 9 million people in the world.

Air pollution

Air pollution has always accompanied civilizations. Pollution started from prehistoric times, when man created the first fires. According to a 1983 article in the journal Science, "soot" found on ceilings of prehistoric caves provides ample evidence of the high levels of pollution that was associated with inadequate ventilation of open fires."

Urban pollution

The burning of coal and wood, and the presence of many horses in concentrated areas made the cities the primary sources of pollution.

Water Pollution

Water pollution, by the discharge of wastewater from commercial and industrial waste (intentionally or through spills) into surface waters;

Explanation: