NEET BIOLOGY

Detailed explanation-1: -51% of the pollution is caused by industrial pollution, 27 % by vehicles, 17% by crop burning and 5% by other sources.

Detailed explanation-2: -Energy-related fossil-fuel combustion in high-and middle-income countries and biomass burning in low-income countries accounts for most of the global air pollution, generating 85% of airborne respirable particulate pollution and almost all sulfur dioxide and nitrogen oxide emissions to the atmosphere [17].

Detailed explanation-3: -In Indian cities, a major part of air pollution is sourced, all year around, from burning of diesel, petrol, gas, coal, biomass, and waste and resuspended dust.

Detailed explanation-4: -Vehicle emissions, fuel oils and natural gas to heat homes, by-products of manufacturing and power generation, particularly coal-fueled power plants, and fumes from chemical production are the primary sources of human-made air pollution.

Detailed explanation-5: -Typically, vehicular emission contributes 20-30% of Particulate Matter (PM) 2.5 at the breathing level of air quality.