(1)由圖可以看出,近150年來大氣中二氧化碳含量的變化趨勢是什么?
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(2)大氣中二氧化碳升高的原因有哪些?
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(3)我們應(yīng)采取哪些措施來控制大氣中二氧化碳的含量?
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(4)近150年來,全球氣溫變化趨勢如何?與二氧化碳含量有何關(guān)系?
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(5)近百年來,全球海平面變化趨勢如何?為什么?
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