(i) Planting trees in and around noise sources is an effective solution for noise pollution as plants are known to absorb noise and bring down sound levels.
(ii) Regular servicing and tuning of automobile engines can effectively reduce noise pollution by vehicles and machinery.

Accidental oil spills from tanker ships can cause substantial environmental damage. Oil spreads on the water surface, prevents the entry of light and oxygen into the water. This increases BOD and COD, resulting in mass death of organisms and degradation of water quality. It also clogs fish gills and the feathers of aquatic birds ..

Water pollution occurs when there is a change in the chemical, physical or biological quality of water that has harmful effect(s) on living organisms that consume it or live in it.

(i) Road traffic rationing, encourage public transport, carpooling.
(ii) Increase green cover alongside roads (planting avenue trees).
(iii) Promoting Swachh Bharat Abhiyan

Acid rain is a form of precipitation that contains acidic components, such as sulfuric acid or nitric acid. It damages trees, crops and harms marine animals (coral reefs) and induces corrosion.

Ozone depletion: Thinning of the stratospheric ozone layer is known as ozone depletion. Such depletion causes the 'ozone hole', resulting in poor screening of the harmful UV rays and increase in incidences of skin cancer. Some of the common agents that deplete ozone are CFCs.

Increase in the concentrations of greenhouse gases such as CO₂, methane, nitrous oxide, CFCs, and ozone causes greenhouse effect, warming of the earth, resulting in sea level rise, submerging of islands and sea shores of various parts of the world

Peroxyacetyl nitrate (PAN) is a secondary pollutant present in photochemical smog. It is thermally unstable and decomposes into peroxyethanol radicals and nitrogen dioxide gas causing eye irritation.

CO in the atmosphere interferes with O₂ transport since haemoglobin has greater affinity for carbon monoxide. At low concentration it causes headache and blurred vision. In higher concentration, it can lead to coma and death

Carbon monoxide (CO) is produced mainly due, to incomplete combustion of fossil fuels. Automobiles are major causes of CO pollution in large cities and towns automobile exhausts, fumes from factories, emission from power plants, forest fires and burning of fire-wood contribute to CO pollution.

(i) Transport sources - cars, buses, airplanes, trucks and trains
(ii) Stationary sources - power plants, incinerators, oil refineries, industrial facilities and factories
(iii) Area sources - agricultural - wood / stubble burning and fireplaces
(iv) Natural sources - wind-blown dust, wildfires and volcanoes.

Particulate matters are tiny particles of solid matter suspended in a gas or liquid. Combustion of fossil fuels, fly ash produced in thermal power plants, forest fires, asbestos mining units, cement factories are the main sources of particulate matter pollution.

(i) Amrita Devi was a brave lady from Khejarli village of Jodhpur District, Rajasthan. She sacrificed her life to maintain Bishnoi Dharma. In 1730, Maharaja Abhay Singh, ruler of Marwar, Rajasthan state wanted to log green Khejri (Prosopis cineraria) trees to burn lime for the construction of his new palace. Since there was a lot of greenery in the Bishnoi villages even in the middle of Thar Desert, the king ordered his men to get the wood from Khejri trees. When she came to know about the cutting of trees by the King's men, she and many others had hugged the Khejri trees to save from cutting. But king's men killed Amrita Devi along with more than 363 other Bishnois. It was a Tuesday, black Tuesday in Khejarli. This incident took place to save trees and is recorded in India's history.
(ii) To commemorate her bravery, the Government of Rajasthan and Madhya Pradesh have initiated the prestigious state level award named as 'Amrita Devi Bishnoi Smriti Award' for excellent contribution to the protection and conservation of wildlife.  

Effects: UV rays may penetrate deep into the skin and can lead to premature skin aging and wrinkling of skin; suppression of the immune system, skin cancer (melanoma) and chronic effects leading to eye damage. DNA damage can result from free radicals and reactive oxygen and photons can damage the DNA itself.

Ozone hole is the area above Antarctica, where the ozone layer is the thinnest.