The concept of the 'Anthropocene' has gained traction among geologists as a proposed new geological epoch, characterized by significant human impact on Earth's geology and ecosystems. Unlike previous epochs, which were defined by natural climatic shifts or biological events, the Anthropocene is marked by human-induced changes such as nuclear fallout, plastic pollution, and elevated carbon dioxide levels. However, the formal recognition of this epoch remains contentious. Critics argue that human activities, while impactful, have not yet produced a stratigraphic signature distinct enough to warrant a new epoch, which traditionally requires a clear boundary in rock layers. Proponents counter that the rapid acceleration of these markers since the mid-20th century, known as the 'Great Acceleration,' provides a unique and unambiguous signal. This debate highlights the intersection of scientific rigor and societal urgency, as acknowledging the Anthropocene could influence policy-making and public perception of environmental responsibility.
❓ Anthropoceneの公式認定をめぐる論争の主な理由は何ですか?
A. A. 人間活動は、いかなる重大な地質学的変化も引き起こしていない。
B. B. 提案された時代には、地層中に明確な層序境界が存在しない。
C. C. 地質学者たちは「大加速」の開始時期について意見が分かれている。
D. D. この概念は環境政策や一般の認識に影響を与えない。
✅ 正确答案
B. The proposed epoch lacks a clear stratigraphic boundary in rock layers.
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