Step-by-step explanation:
if the concentration of CO2 or O2 in the air surrounding a plant is significantly altered from normal atmospheric levels, it can have negative effects on the plant's growth and health.
If the concentration of CO2 is too high, it can cause a reduction in the stomatal conductance of plants, leading to a decrease in transpiration rates and water uptake, as well as changes in plant morphology and physiology. This can ultimately result in reduced growth and yield in some plant species.
On the other hand, if the concentration of O2 is too low, it can lead to reduced respiration rates and oxidative damage in plants, which can negatively impact plant growth and development.
Therefore, in terms of toxicity, it is not a matter of which gas is less toxic, but rather what the appropriate concentrations of these gases are for optimal plant growth and health. Generally, plants require a balanced concentration of CO2 and O2 in the air surrounding them for optimal growth and survival.
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