TOEFL読解

❓ 質問 According to the passage, what is the primary reason some scientists oppose formally recognizing the Anthropocene as a new geological epoch?

A. A. Human impacts have been too uniform across different regions to define a single global boundary.
B. B. The markers proposed, such as nuclear fallout, are not preserved in stratigraphic layers worldwide.
C. C. The term is purely cultural and political, lacking any scientific basis.
D. D. The changes are not distinct enough compared to natural phenomena like glacial advances.

B. The markers proposed, such as nuclear fallout, are not preserved in stratigraphic layers worldwide.