The concept of the 'Anthropocene' has gained traction among geologists and environmental scientists as a proposed new geological epoch defined by significant human impact on Earth's geology and ecosystems. Unlike previous epochs, which are identified by natural stratigraphic markers such as ice cores or rock layers, the Anthropocene is marked by anthropogenic signals including nuclear fallout, plastic pollution, and elevated carbon dioxide levels. However, the formal recognition of this epoch remains contentious. Critics argue that human influence, while profound, does not yet constitute a distinct geological boundary, as it lacks a clear and globally synchronous marker in the stratigraphic record. Proponents counter that the rapid acceleration of these human-induced changes since the mid-20th century, known as the 'Great Acceleration', provides compelling evidence for a new epoch. This debate highlights the complex interplay between scientific classification and human agency in shaping planetary history.
❓ Según el pasaje, ¿cuál es una razón principal por la que algunos científicos se oponen al reconocimiento formal del Antropoceno?
A. A. El impacto humano no es lo suficientemente significativo como para alterar los procesos geológicos.
B. B. Los marcadores propuestos, como la contaminación por plásticos, no son duraderos a lo largo de escalas de tiempo geológicas.
C. C. No existe un marcador estratigráfico claro y globalmente sincrónico para esta época.
D. D. La 'Gran Aceleración' ocurrió de manera demasiado gradual como para ser considerada un límite.
✅ 正确答案
C. There is no clear and globally synchronous stratigraphic marker for the epoch.
IELTS Reading Tips
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