The concept of the 'Anthropocene' has gained traction among geologists as a proposed new geological epoch defined by significant human impact on Earth's geology and ecosystems. Unlike previous epochs, which were delineated by natural climatic shifts or biological events, the Anthropocene is characterized by markers such as nuclear fallout, plastic pollution, and elevated carbon dioxide levels. However, the formal recognition of this epoch remains contentious. Critics argue that human influence, while profound, lacks the global stratigraphic distinctiveness required for a formal geological boundary. Proponents counter that the unprecedented scale and synchrony of human-induced changes justify a distinct epoch, urging a redefinition of humanity's role in planetary history.
❓ 文章によると、アントロポセン（人新世）の公式な認定をめぐる論争の主な理由は何ですか？
A. 提案されたマーカー、例えば核降下物やプラスチック汚染は、地質学的記録に保存されるにはあまりにも最近のものである。
B. B. 一部の科学者は、人間の影響が明確な層序境界の基準を満たしていないと信じている。
C. C. 人新世の概念は、自然現象に基づく伝統的な地質時代の分類に挑戦を投げかけている。
D. D. 地球規模での人為的変化が新たな時代を支持する証拠は不十分である。
✅ 正确答案
B. Some scientists believe that human impact does not meet the criteria for a distinct stratigraphic boundary.
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