In atmosphere, CO2 gas is produced by(I) Respiration.(II) Burning of fossil fuels for energy.(III) Decomposition of CaCO3 for manufacture of cement.(IV) Volcanic eruption.
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a
(I) and (II)
b
(I), (II) and (III)
c
(I), (II) and (IV)
d
All of these
answer is C.
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Detailed Solution
(I) Respiration.(II) Burning of fossil fuels for energy.(IV) Volcanic eruption.