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Discuss Briefly About Greenhouse Gases - Biology

Discuss briefly about Greenhouse gases

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Solution 1

Greenhouse gases: - Thegreenhouse effect refers to an overall increase in the average temperature of the Earth due to the presence of greenhouse gases. Greenhouse gases mainly consist of carbon dioxide, methane, and water vapour. When solar radiations reach the Earth, some of these radiations are absorbed. These absorbed radiations are released back into the atmosphere. These radiations are trapped by the greenhouse gases present in the atmosphere.. This helps in keeping our planet warm and thus, helps in human survival. However, an increase in the amount of greenhouse gases can lead to an excessive increase in the Earth’s temperature, thereby causing global warming

Solution 2

Greenhouse gases: Gases that trap the heat of the sun in the earth’s atmosphere increasing atmospheric temperature effect are called greenhouses gases. CO2, CH4, N2O and CFC, cause greenhouse. In the absence of greenhouse gases, the temperature of earth would go down to -18°C. The net effect of higher GHGs will be disastrous, (i) Melting of polar ice caps and mountain snow caps resulting in rising of sea level threatening submergence of many islands and coastal areas. Odd climate changes like El Nino. Increased floods and drought.

Concept: Greenhouse Effect and Climate Change
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APPEARS IN

NCERT Class 12 Biology Textbook
Chapter 16 Environmental Issues
Q 11.1 | Page 286
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