Question

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

Answer 1

Hint: Global warming is the rise in the temperature of the earth due to the trapping of the UV rays, by the ozone layer. The major cause of Global warming is air pollution. Therefore, global warming can be controlled by controlling pollution.

Complete answer:
Global warming is caused when air pollutants such as carbon dioxide, methane, nitrous oxide, chlorofluorocarbons, etc. trap the sunlight and sun’s radiation in the atmosphere, causing the planet to become warmer.
-These pollutants tend to last for centuries in the atmosphere. All over the world, fossil fuels are burnt daily as they are currently the main source of energy that runs cars, industries, etc. which produces a lot of carbon dioxide and other air pollutants which contribute to global warming.
-The greenhouse effect is also a leading cause of global warming. The temperature of the earth is rising because of Global warming. Due to this, the planet has become warmer. As a result, the polar ice caps are melting and the level of the water in the seas and oceans is rising.
-Due to this, the coastlines are submerging under the water. The temperature zones are shifting upwards. The flora and fauna of the cold regions are at threat as they cannot survive in hotter temperatures.
-To prevent global warming, drastic steps need to be taken immediately that include reducing the dependence on fossil fuels. The reduction of fossil fuels has started with the emergence of electric vehicles in the market to reduce the amount of carbon dioxide produced via automobiles every year. -Also, the adoption of non-conventional energy sources such as solar, wind energy can help in slowing down global warming.

Note: Greenhouse effect is the trapping of the UV rays by the Greenhouse gases like carbon dioxide, methane, nitrous oxide, chlorofluorocarbons, etc. Earth has an ozone layer in its atmosphere. The primary function of this ozone layer is to prevent the harmful Ultraviolet or UV rays of the sun from coming inside and to trap the heat. However, the greenhouse gases have caused the ozone to deplete. Due to this, the harmful UV rays enter the earth’s atmosphere along with the heat waves. They strike with the surface of the earth and get reflected. But they lose a major portion of their energy while striking the surface so they are not able to escape out of the atmosphere. So, they get retained between the surface of the earth and the atmosphere. This process is known as the Greenhouse effect.