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प्रश्न
What would happen, if the greenhouse gases were totally missing in the earth’s atmosphere?
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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.
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संबंधित प्रश्न
Haemoglobin of the blood forms carboxy haemoglobin with ______.
Photo chemical smog formed in congested metropolitan cities mainly consists of ______.
The pH of normal rain water is ______.
Living in the atmosphere of CO is dangerous because it ______.
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.
Ethane bums completely in air to give CO2. while in a limited supply of air gives CO. The same gases are found in automobile exhaust. Both CO and CO2 are atmospheric pollutants
- What is the danger associated with these gases?
- How do the pollutants affect the human body?
Explain the effects of acid rain.
Differentiate the following:
BOD and COD
