| Impacts on Agriculture |
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| q | Based
on experimental research, crop yield responses to climate |
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| change vary widely, depending upon species and cultivar; soil |
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| properties;
pests, and pathogens; the direct effects of carbon |
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| dioxide
(CO2) on plants; and interactions between CO2, air |
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| temperature,
water stress, mineral nutrition, air quality, and |
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| adaptive
responses. |
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| q | Even though increased CO2 concentration can stimulate crop |
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| growth and yield, that benefit may not always overcome the |
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| adverse
effects of excessive heat and drought. |
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