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प्रश्न
Explain the term 'global warming'. State two ways by which global warming can be reduced.
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उत्तर
Global warming is the increase in temperature of Earth due to the enhanced concentration of greenhouse gases (CFCs) in the atmosphere.
Two ways to reduce global warming:
Plant more trees to increase green cover
Minimize the use of automobiles
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संबंधित प्रश्न
State the effect of global warming in coastal regions.
How will global warming affect the agriculture?
Fill in the blank:
______ is a major cause of climate change.
Fill in the blank:
The __________in the earth’s temperature is called global warming.
Match the Columns:
| Column A | Column B |
| 1. Ozone depletion | a. GHG |
| 2. Methane | b. Disappearance of habitat |
| 3. Deforestation | c. UV rays from the sun |
| 4. Fossil fuel | d. CFCs |
| 5. Global warming | e. comes from cattle |
Give a description of the recent studies about Global Warming.
Explain how global warming takes place in the presence of green house gases. Give a reason why the surface temperature of earth is maintained in absence of green house gases.
Give a chemical test to distinguish between the following gases:
Carbon dioxide and sulphur dioxide
Incomplete combustion of fuel such as petrol and diesel gives
Match the items of Column A with those of Column B.
| Column A | Column B |
| (a) sulphur dioxide | (i) damage ozone layer |
| (b) carbon dioxide | (ii) reduces oxygen-carrying capacity of blood |
| (c) carbon monoxide | (iii) acid rain |
| (d) chlorofluorocarbons | (iv) green house gas |
