Advertisements
Advertisements
प्रश्न
What would happen, if the greenhouse gases were totally missing in the earth’s atmosphere?
उत्तर
The solar energy radiated back from the earth’s surface is absorbed by the greenhouse gases. (CO2, CH4, O3, CFCs) are present near the earth’s surface. They heat up the atmosphere near the earth’s surface and keep it warm.
As a result of these, there is the growth of vegetation that supports life. In the absence of this effect, there will be no life of both plant and animal on the surface of the earth.
APPEARS IN
संबंधित प्रश्न
Living in the atmosphere of CO is dangerous because it ______.
Release of oxides of nitrogen and hydrocarbons into the atmosphere by motor vehicles is prevented by using ______.
Match the List I with List II and select the correct answer using the code given below the lists.
| List I | List II | ||
| A | Depletion of ozone layer |
1 | CO2 |
| B | Acid rain | 2 | NO |
| C | Photochemical smog | 3 | SO2 |
| D | Green house effect | 4 | CFC |
Assertion (A): If BOD level of water in a reservoir is more than 5 ppm it is highly polluted.
Reason(R): High biological oxygen demand means high activity of bacteria in water.
Define smog.
Explain how does greenhouse effect cause global warming.
How does classical smog differ from photochemical smog?
What are particulate pollutants? Explain any three.
How is acid rain formed?
Differentiate the following:
BOD and COD
