❓ 質問 According to the passage, what is a major obstacle to formally recognizing the Anthropocene as a geological epoch?
- A. A. The lack of any human-induced markers in the stratigraphic record.
- B. B. The absence of a globally simultaneous marker due to varying timing of human impacts.
- C. C. The strong opposition from cultural historians who reject the term entirely.
- D. D. The fact that carbon dioxide levels are not elevated enough to be detected.