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Air — Social Studies STD 7 — Question

CBSE BoardEnglish MediumSTD 7Social StudiesAir3 Marks
Question
What is global warming? What is its affect?
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Answer

When the heat retained through greenhouse gas increases the temperature of the earth,It causes global warming:
  • The plants maintain the balance of gases. However this balance is upset by burning fuels such as coal, petroleum oil and large scale deforestation.
  • This rise in temperature causes the snow in coldest parts to melt.
  • As a result the sea level rises causing floods in the coastal areas.
  • This may bring changes in weather and climate leading to extinction of certain plants and animal species.

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