CBSE Class 9 Biology Natural Resource Air
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- What is natural resources?
- Who is more poisonous among sulphur dioxide and carbon monoxide?
- What is natural resources
- What is natural resources
- when does this fog disappear
- What is Science?
- What are the 3 cause of greenhouse effect
- What is atmosphere? Name the five layers of atmosphere.
- What are the two ways by which carbon dioxide is fixed?
- What do you understand by air pollutant? What are the chief constituents of air impurities?
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