The concentration of CO_{2} in the atmosphere | vedclass

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(D) Carbon dioxide is a major limiting factor for photosynthesis.The concentration of $CO_{2}$ in the atmosphere is very low,ranging between $0.03-0.0

Vedclass · Accepted Answer

Either $(a)$ or $(b)$

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(D) Carbon dioxide is a major limiting factor for photosynthesis.The concentration of $CO_{2}$ in the atmosphere is very low,ranging between $0.03-0.04 \%$ or $300-400 \;ppm$.An increase in concentration up to $0.05 \%$ can cause an increase in $CO_{2}$ fixation rates.Beyond this level,high concentrations can become damaging to plants over longer periods.

The concentration of $CO_{2}$ in the atmosphere is between

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