Concentration of $CO_2$ from nature which is able to induce closure of stomata is

  • A
    $0.01 - 0.02\%$
  • B
    $0.03 - 0.05\%$
  • C
    $0.06 - 0.08\%$
  • D
    $0.08 - 0.09\%$

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$C$.Bean-shapedBean-shaped
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