Discuss the causes and effects of global warming. What measures need to be taken to control global warming?

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answered Mar 18, 2020 by Kasis01 (47.3k points)
selected Mar 19, 2020 by Rajni01

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Global warming is rise in mean temperature of lower atmosphere and earth’s surface.
Causes – increase in quantity of radioactively active green house gases CO₂, CH₄, N₂O, CFCs. They allow heat waves to reach surface and prevents their escape.
They are produced by combustion of fossil fuels, biomass [CO₂]; burning of nitrogen rich fuels [N₂O]; paddy fields, fermentation in cattle and wet lands [CH₄]; refrigerators, aerosols, drying, cleaning [CFCs].
Effects: Heating of earth surface [mean temperature is increased] Climatic changes e.g.: El Nino effect.
Increased melting of polar ice caps and Himalayan snow caps. Increased sea levels and coastal areas will submerge.
Measures – Decreased use of fossil fuels, improve efficiency of energy usage, Reduce deforestation, plant trees Control of man made sources of green house gases like vehicles, aerosol sprays.