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炎德英才大联考·长沙市一中2024届高三月考试卷(三)2英语答案

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of plants above the ground is higher,meaning more carbon is stored,the team reports in Nature Geoscience. The model's predictions checked out in the real world,too. Trees in forests where elephants live had denser woods by about 75 grams per cubic meter than those in forests without ele- phants.Even just one elephant per square kilometer could in- crease the amount of plant mass in the forest by up to 60 tons per hectare,enough to suck up more than 10 billion tons of planet warming carbon dioxide across Africa's 2.2 million square kilo- meters of forest.As elephants disappear at an alarming rate, those same forests will be less able to help fight climate change. Elephants'effects on forest ecosystems may also explain why rainforests look different from continent to continent.

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