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Standard XII
General Knowledge
Question

The increase in Earths average surface temperature due to the effect of greenhouse gases such as CO2 and emissions from fossil fuel is known as global warming. What could be the effect of global warming?
  1. There will be an increase in crop production.
  2. There will be melting of polar ice caps.
  3. There will be a rise in sea level.
  4. Both (A) and (C)

A
Both (A) and (C)
B
There will be melting of polar ice caps.
C
There will be an increase in crop production.
D
There will be a rise in sea level.
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Solution
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  • The melting of the polar ice caps is caused by the overall increase in global temperature, and this melting can have serious consequences for all organisms on Earth. Besides being important for marine life, ice caps help regulate sea level and global temperatures.
  • Not only does the melting of the ice caps increase the volume of water in the oceans, it also decreases the salinity, or salt content.
  • Polar ice caps are made of fresh water, so adding more fresh water without adding more salt makes the ocean water less saline. This can cause problems for organisms that are well adapted to the very salty ocean waters.

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The increase in Earths average surface temperature due to the effect of greenhouse gases such as CO2 and emissions from fossil fuel is known as global warming. What could be the effect of global warming?
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Q2
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