The concept of the 'Anthropocene' has gained traction among geologists and environmental scientists as a proposed new geological epoch defined by human impact on Earth's systems. Unlike previous epochs, which are demarcated by natural events such as ice ages or asteroid impacts, the Anthropocene is characterized by anthropogenic markers, including radioactive isotopes from nuclear tests, plastic pollution, and elevated carbon dioxide levels. However, the formal recognition of this epoch remains contentious. Critics argue that human activity is too varied and temporally uneven to constitute a single, coherent geological boundary. Proponents counter that the scale and irreversibility of human-induced changes, such as biodiversity loss and climate alteration, justify a distinct epoch. This debate underscores a broader tension between scientific classification and societal responsibility, as acknowledging the Anthropocene implies a call for urgent action to mitigate human impacts.
❓ 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. 提议的标记物，如塑料污染，在地质记录中无法检测到。
B. B) 人类活动的类型和时间差异过大，难以形成一致的地质边界。
C. C）由于缺乏证据，地质学家无法就人类世的起始日期达成一致。
D. D) 这一概念忽视了诸如冰河时期等塑造地球历史的自然事件。
✅ 正确答案
B) Human activities vary too much in type and timing to form a consistent geological boundary.