The concept of the 'Anthropocene' has gained traction among geologists as a proposed new geological epoch defined by significant human impact on Earth's geology and ecosystems. Unlike previous epochs, which were characterized by natural climatic shifts and biological evolution, the Anthropocene is marked by human-induced changes such as nuclear fallout, plastic pollution, and accelerated species extinction. However, the formal recognition of this epoch remains contentious. Critics argue that human activity has been altering the environment for millennia, making it difficult to pinpoint a precise starting point. Proponents suggest the mid-20th century, coinciding with the 'Great Acceleration' of industrial growth and global-scale impacts, as the most appropriate boundary. This debate highlights broader questions about how humanity's legacy will be preserved in the geological record and whether our species' influence warrants a distinct stratigraphic designation.
❓ 根据文章内容，为什么正式承认“人类世”存在争议？
A. A) 因为人类对环境的影响与自然变化相比相对较小。
B. B) 因为对于人类影响何时开始定义一个独特的地质时代存在分歧。
C. C) 因为核沉降物和塑料污染不被视为持久的地质标志。
D. D）因为人类世的概念缺乏科学界的支持。
✅ 正确答案
B) Because there is disagreement over when human influence began to define a distinct geological epoch.