`CO_(2)` content of atmosphere has increased in the last 150 years fromA. 25 to 35 ppmB. 270 to 340ppmC. 0.027 to 0.34ppmD. 0.2 to 0.3 ppm

`CO_(2)` content of atmosphere has increased in the last 150 years fro

1.	`CO_(2)` content of atmosphere has increased in the last 150 years fromA. 25 to 35 ppmB. 270 to 340ppmC. 0.027 to 0.34ppmD. 0.2 to 0.3 ppm
Answer» Correct Answer - b `CO_(2)` conc. Was about 270ppm in 1750and 368 ppm in 2000. The rise has been due to large scale deforestation (for grazing land, cropland or urban estates). Change in land use and large scale combustion of fossil fuels.

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`CO_(2)` content of atmosphere has increased in the last 150 years fromA. 25 to 35 ppmB. 270 to 340ppmC. 0.027 to 0.34ppmD. 0.2 to 0.3 ppm

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