According to scientists, human expansion and the human appropriation of Earth's finite resources is the cause of what may be the most sweeping wave of species extinctions since the demise of the dinosaurs 65 million years ago.
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Aexpansion and the human appropriation of Earth's finite resources is
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Bexpansion and human appropriation of Earth's finite resources are
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Cexpansion and its appropriation of Earth's finite resources is
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Dexpansion, along with their appropriation of Earth's finite resources, is
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Eexpansion, along with its appropriation of Earth's finite resources, are
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正确答案: B