❓ 質問 According to the passage, which of the following is a primary reason why some scientists resist formally recognizing the Anthropocene?
- A. A) Human activities have not yet produced detectable changes in geological layers.
- B. B) The proposed start date of the epoch is too recent to be considered geological.
- C. C) Human effects may be too variable to serve as clear stratigraphic markers.
- D. D) The term was popularized by a non-geologist, which undermines its validity.