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The rise in carbon dioxide in recent decades is mainly due to:
AOcean evaporation
BPlant respiration
CBurning fossil fuels
DVolcanic eruptions
Answer & Solution
Correct answer: C. Burning fossil fuels
1. Other gas volumes are constant.
2. Fossil fuel burning has raised carbon dioxide.
3. Air temperature has risen too.
_Source: NCERT Class 11 Fundamentals of Physical Geography, Chapter 8, Composition and Structure of Atmosphere._
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