Question

9 Harmful Effects of Global Warming

Answer 1

The effects of global warming are the environmental and social changes caused (directly or indirectly) by human emissions of greenhouse gases. There is a scientific consensus that climate change is occurring, and that human activities are the primary driver.[1] Many impacts of climate change have already been observed, including glacier retreat,[2] changes in the timing of seasonal events[2] (e.g., earlier flowering of plants),[3] and changes in agricultural productivity.[2] Anthropogenic forcing has likely contributed to some of the observed changes, including sea level rise, changes in climate extremes, declines in Arctic sea ice extent and glacier retreat.[4]

Future effects of climate change will vary depending on climate change policies[5] and social development.[6] The two main policies to address climate change are reducing human greenhouse gas emissions (climate change mitigation) and adapting to the impacts of climate change.[7] Geoengineering is another policy option.[7]

Near-term climate change policies could significantly affect long-term climate change impacts.[5][8] Stringent mitigation policies might be able to limit global warming (in 2100) to around 2 °C or below, relative to pre-industrial levels.[9] Without mitigation, increased energy demand and extensive use of fossil fuels[10] might lead to global warming of around 4 °C.[11][12] Higher magnitudes of global warming would be more difficult to adapt to,[13] and would increase the risk of negative impacts.[14]

Answer 2

EFFECTS OF GLOBAL WARMING ARE AS FOLLOWS :

=> An increase of as less 1°C in Earth's temperature can lead to melting of polar ice caps and consequent rise in sea level. A rise in sea level can submerge a number of major cities of the world, which are located along the sea coasts. Besides causing the floods in low-lying coastal cities, global warming poses a threat of recurrence of dust bowl condition of 1930's. Dust bowl is an area where vegetation has been lost and soil reduced to dust making it susceptible to erosion.

=> Increase in temperature of the Earth due to green house effect will cause a change in weather and precipitation patterns on the Earth.

=> One of the danger of continued global warming is methane burp whch is caused by the melting of the methane hydrates in permafrost (of polar ice) and on the sea floor. Methane being a green house gad increases global warming.