The concept of the 'Anthropocene' has gained traction among geologists and environmental scientists as a proposed 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, nuclear fallout, and elevated greenhouse gas levels. However, the formal recognition of this epoch remains contentious. Some scholars argue that human influence has been too gradual and diachronous to constitute a clear boundary in the stratigraphic record, while others contend that the mid-20th century 'Great Acceleration' provides a distinct and globally synchronous signal. This debate highlights broader questions about how we define time and our role in shaping planetary history.
❓ 根据文章所述，围绕正式承认“人类世”的争议，主要原因是什么？
A. A. 人类的影响过于迅速且一致，未能留下清晰的地质标志。
B. B. 所提出的标记物，如塑料污染，并非在所有地区都能找到。
C. C. 一些科学家认为，人类影响缺乏一个清晰的、全球同步的地层边界。
D. D. “大加速”在人类历史上发生得太早，因此不具有现实意义。
✅ 正确答案
C. Some scientists believe human influence lacks a clear, globally synchronous stratigraphic boundary.