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 characterized by natural climatic shifts or biological events, the Anthropocene is marked by human-induced changes such as nuclear fallout, plastic pollution, and accelerated species extinction. However, the formal recognition of this epoch remains contentious. Critics argue that the markers of human activity are not uniformly distributed across geological strata, making a clear global boundary difficult to establish. Proponents counter that the sheer scale and permanence of human modifications, such as altered nitrogen cycles and the proliferation of technofossils, warrant a distinct epoch. This debate highlights a fundamental tension between geological precision and the broader narrative of human influence on planetary history.
❓ 批評家たちが人新世を地質時代として正式に認定することに反対する主な理由は何ですか？
A. A. 人間活動は地質学的プロセスを変えるほど重要ではない。
B. B. 人間の影響の証拠は、すべての地質層において一貫して見られるわけではない。
C. C. 提案された時代には、核の降下物やプラスチックといった明確な指標が欠けている。
D. D. 地質学界は、人新世の概念を一致して否定している。
✅ 正确答案
B. Evidence of human impact is not consistently found across all geological layers.
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