自然界中的碳循环对人类活动有重大影响。 (1)CO2经光合作用转化

自然界中的碳循环对人类活动有重大影响。

1CO2经光合作用转化为有机物,该过程将太阳能转化为      能。

2)葡萄糖(C6H12O6)完全燃烧的化学方程式为                               

3人呼吸作用产生的CO2若不能及时排出,滞留在血液中会使血液的pH   填“不变”、“变大”或“变小”)。

答案

1)化学

2C6H12O6 +6O2       6CO2 + 6H2

3)变

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