The concept of the 'Anthropocene' has gained traction among geologists as a proposed new geological epoch defined by human impact on Earth's systems. Unlike earlier epochs, which were delineated by natural phenomena such as glacial cycles or mass extinctions, the Anthropocene is marked by a suite of anthropogenic signatures, including radioactive isotopes from nuclear tests, microplastics in sedimentary layers, and a dramatic spike in atmospheric carbon dioxide. Proponents argue that these markers are stratigraphically distinct and globally synchronous, warranting formal recognition. However, skeptics contend that the term's utility is more cultural than scientific, as human-induced changes occur at varying rates across regions, complicating the establishment of a single, clean boundary. This debate highlights the tension between geological precision and the broader narrative of planetary stewardship, raising questions about how science defines epochs in an era of pervasive human agency.
❓ 본문에 따르면, 일부 과학자들이 인류세를 지질학적 시대로 공식화하는 것에 반대하는 주된 이유는 무엇인가?
A. A. 인류의 영향은 아직 지질층에서 뚜렷하게 나타나지 않았다.
B. B. 제안된 마커들은 시기적으로 전 세계적으로 일관되지 않습니다.
C. C. 해당 용어는 어떠한 과학적 근거나 관련성도 결여되어 있다.
D. D. 방사성 동위원소만이 신뢰할 수 있는 지표이다.
✅ 正确答案
B. The proposed markers are not globally consistent in timing.
IELTS Reading Tips
Skim the questions first, underline keywords, then locate in the passage
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