Question

Article on 'global warming- the need of the hour'

Answer 1

Global warming and climate change are terms for the observed century-scale rise in the average temperature of the Earth's climate system and its related effects.[2] Multiple lines of scientific evidence show that the climate system is warming.[3][4][5] Although the increase of near-surface atmospheric temperature is the measure of global warming often reported in the popular press, most of the additional energy stored in the climate system since 1970 has gone into ocean warming. The remainder has melted ice and warmed the continents and atmosphere.[6][a] Many of the observed changes since the 1950s are unprecedented over tens to thousands of years.[7] On 12 November 2015, NASA scientists reported that human-made carbon dioxide (CO2) continues to increase above levels not seen in hundreds of thousands of years: currently, about half of the carbon dioxide released from the burning of fossil fuels is not absorbed by vegetation and the oceans and remains in the atmosphere.

Answer 2

Climate change refers to the regional and global change in climatic patterns. It can be caused by various human activities. When climate change occurs it leads to a rise in temperature and other major changes. Moreover, it may result in intense rain, flood, and drought. Nowadays due to climate change, the glaciers and oceans have undergone severe changes. The oceans are becoming more toxic and due to the melting of glaciers there is a rise in sea level.

Due to the human activities which produce a large amount of carbon dioxide and other greenhouse gases, climate change occurs. In order to produce energy fossil fuels are burned which produces most of the harmful gases. To prevent the earth from warming, greenhouse gases act as a blanket to the earth. In the last century, global warming has taken up its effect in great amount. Due to the increase in automobiles, as they release poisonous gases the air pollution is rising at an alarming rate. Therefore, the air we breath is not safe and have caused many lung disorders. Also by mixing sewage water in the drinking water causes water pollution which makes harmful diseases.