The concept of the 'Anthropocene' has gained traction among geologists and environmental scientists as a proposed new geological epoch defined by significant human impact on Earth's geology and ecosystems. Unlike previous epochs, which were shaped by natural forces such as volcanic activity or asteroid impacts, the Anthropocene is characterized by markers like plastic pollution, radioactive fallout from nuclear tests, and elevated carbon dioxide levels. However, the formal recognition of this epoch remains contentious, as some scholars argue that human influence, while pervasive, has not yet produced a distinct stratigraphic signal comparable to that of earlier transitions. Others contend that the term itself is useful beyond geology, serving as a cultural and political catalyst for discussions on sustainability and planetary stewardship. This debate highlights the intersection of scientific classification and societal values, raising questions about how we define boundaries in both time and responsibility.
❓ 本文によると、人新世が地質時代として正式に認められることがなぜ議論を呼ぶのか。
A. A) 人間の影響がまだ地球規模の生態系に影響を及ぼすほど広がっていないからである。
B. B) なぜなら、一部の科学者は、過去の時代と比較できる明確な層序学的指標が欠けていると信じているからである。
C. C) なぜなら、その用語は地質学ではなく、文化的・政治的な文脈でのみ使用されるからである。
D. D）なぜなら、火山活動と小惑星の衝突が依然として地球を形作る主要な力だからである。
✅ 正确答案
B) Because some scientists believe it lacks a clear stratigraphic marker comparable to past epochs.
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