5.2 understand the effects on crop yield of increased carbon dioxide and increased temperature in glasshouses
crop yield is governed by the rate of photosynthesis.
CO2 is a substrate in the reaction of photosynthesis.
by increasing the amount of carbon dioxide, the products of photosunthesis will also increase until it reaches a point where it can go no further.
in comparison, increasing temperature will also increase the rate of photosynthesis until it reaches the optimal temperature. if temperature increases any further, the rate of photosynthesis will slow down.
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