NEET BIOLOGY

Detailed explanation-1: -Ozone can lead to asthma attacks and also reduce lung function. Besides these, cancer-causing agents are also present in these clouds. Around 4, 00, 000 deaths due to indoor air pollution in India and China whereas 5, 00, 000 deaths per year due to outdoor air pollution have been seen because of Asian brown clouds.

Detailed explanation-2: -The Asian brown cloud is caused by large amounts of aerosols (such as soot and dust) produced in the combustion of fossil fuels and biomass across the region.

Detailed explanation-3: -Brown clouds contain a variety of toxic aerosols, carcinogens and particles, including fine particulate matter (PM2.5). These have been linked with a variety of health effects, including respiratory disease and cardiovascular problems.

Detailed explanation-4: -Air pollution in China Air pollution leads people to be exposed to fine particles in polluted air that penetrate deep into the lungs and cardiovascular system, causing diseases including stroke, heart disease, lung cancer, chronic obstructive pulmonary diseases and respiratory infections.

Detailed explanation-5: -The Asian Brown Cloud is a layer of air pollution that covers parts of the northern Indian Ocean, India and Pakistan, and parts of South Asia, Southeast Asia and China.[2, 3] This pollution layer was observed during the Indian Ocean Experiment (INODEX) intensive field observation in 1999.