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.
❓ Según el pasaje, ¿cuál es la razón principal de la controversia en torno al reconocimiento formal del Antropoceno?
A. Los marcadores propuestos, como la contaminación por plásticos, no son detectables en los registros geológicos.
B. B) Las actividades humanas varían demasiado en tipo y momento para formar un límite geológico consistente.
C. C) Los geólogos no pueden ponerse de acuerdo sobre la fecha de inicio del Antropoceno debido a la falta de evidencia.
D. D) El concepto ignora eventos naturales como las glaciaciones que han moldeado la historia de la Tierra.
✅ 正确答案
B) Human activities vary too much in type and timing to form a consistent geological boundary.
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