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प्रश्न
Discuss harmful effects of greenhouse effect.
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उत्तर
Large amount of carbon-dioxide in the polluted air results in increase of greenhouse effect which has raised the average temperature of the Earth by 2°C. This results in global warming which, in turn, will melt ice on the polar caps, thereby raising the level of sea water by a few metres. This can result in submerging of coastal areas and islands causing excessive damage.
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संबंधित प्रश्न
What do you observe when a beam of light is allowed to enter in a closed dark room through a small hole.
How is air useful to scooters and cars.?
Tick (√) the correct alternative from the choice given for the following statement.
Air pollution is due to the
Tick (√) the correct alternative from the choice given for the following statement.
Which of the following is not a greenhouse gas?
Answer in your own words.
What are the various constituents of air? Write their uses.
Take a squeezable bottle. Make a hole on the lid and close the bottle tightly. Bring the bottle near your face and press the bottle. What do you feel?
The composition of air is always exactly the same.
What is global warming?
State whether the following statement is true or false. If false, correct them.
Air does not occupy any space.
Explain the following observations very briefly
The arrow of weather cock points towards a particular direction at a particular moment.
