Question

The contamination of air by gases, smoke, and ash is called…..

Answer 1

Hint: The gases, smokes, and ash are the pollutants that are harmful to the environment as well as the human health. The increase in these gases may result in an increase in the earth’s temperature thus resulting in global warming.

Complete answer
Air pollution is caused due to the particles present in the air which are harmful to the health of humans and others by causing damage to the climate and other materials. This will lead to various diseases and even allergies and the disease may even be so severe that it may lead to death. Air pollution is caused due to the disturbances that are caused in the environment.
The U.S. Environmental Protection Agency (EPA) has approved and passed the Clean Air that was enacted to protect the surrounding and organisms from the harmful and toxic gases that are released into the air. This law was enacted in 1970 by the NRDC.
Effects on the environment-
Global warming: According to estimates, at the current rate of increase, the average global temperature will rise by 3°C to 8°C in the next 100 years. This change in temperature will lead to the change in the climate in various regions, species distribution, agriculture imbalance, and food production, the melting of snow caps, and the resultant increase in sea levels.
The formation of photochemical smog: The combination of hydrocarbons and nitrogen oxides when the sunlight is present will form the smog. These polluting gases will result in severe respiratory diseases.
The formation of acid rain: When the water gets mixed with harmful gases like sulfur dioxide and nitrogen oxides then it will result in the formation of sulphuric acid and nitric acid, these together will form acid rain.
Depletion of Ozone: Ozone is known to ingest the Ultraviolet (UV) rays present in the sun's radiation and it can protect us from the dangerous impacts of the UV rays.

Note:
The vegetation plays an important positive role in atmospheric purification and air pollutants reduction of the atmospheric gases by photosynthesis, respiration processes, and the final stage of litter decomposition with mineralization.