Picture a is an unfavorable, counterproductive pathway that plants use when environmental conditions are hot and dry. in this scenario, plants close to try and minimize water loss through the process this decreases the amcint entering the leaf to be utilized in the! for the production of sugar. when this happens, that accumulates from the light reactions binds to the has an equal affinity to both atmospheric gases. the result is the consumption the production of a decrease in the amount by the calvin cycle.