The concept of the 'Anthropocene' has gained traction among geologists as a proposed new geological epoch defined by human impact on Earth's systems. Unlike previous epochs, which were delineated by natural climatic shifts or biological events, the Anthropocene is characterized by markers such as nuclear fallout, plastic pollution, and elevated carbon dioxide levels. However, the formal recognition of this epoch remains contentious. Some scholars argue that human-induced changes are not yet stratigraphically distinct enough to warrant a separate epoch, while others contend that the scale and permanence of these changes, including species extinction rates and altered nitrogen cycles, already surpass those of the Holocene. This debate reflects a broader tension between scientific classification and societal awareness, as naming a new epoch carries profound implications for how humanity perceives its role in planetary history.
❓ 正式承认“人类世”为新地质时代引发争议的主要原因是什么？
A. A. 科学家们对于人类世的精确起始日期尚未达成一致。
B. B. 有人认为人类造成的变化在地层学上不够显著，而另一些人则认为这些变化已经超越了全新世时期的影响程度。
C. C. “人类世”这一术语并未被公众广泛接受。
D. D. 没有证据表明人类活动对全球系统产生了影响。
✅ 正确答案
B. Some argue human changes are not stratigraphically distinct enough, while others believe they already exceed Holocene-level impacts.