The concept of the 'Anthropocene' has gained traction among geologists as a proposed new geological epoch defined by significant human impact on Earth's systems. Unlike earlier epochs, which were characterized by natural climate shifts and biological evolution, the Anthropocene is marked by the pervasive influence of industrial activity, including elevated atmospheric carbon dioxide levels, widespread plastic pollution, and alterations to the nitrogen cycle. Proponents argue that these changes are stratigraphically distinct, appearing in sediment layers as a 'technofossil' record. However, critics contend that the term lacks formal geological precision, as human effects are asynchronous across the globe, and they question whether it should be defined by a specific date, such as the onset of nuclear testing in the mid-20th century. This debate highlights a broader tension between scientific classification and the recognition of humanity's transformative role.
❓ Según el pasaje, ¿cuál es una razón principal por la que algunos académicos se oponen a formalizar el Antropoceno como una época geológica?
A. Los impactos humanos no son visibles en las capas de sedimentos.
B. Sus marcadores definitorios pueden no presentarse de manera uniforme en todo el mundo.
C. No tiene en cuenta los cambios climáticos en épocas anteriores.
D. El término es utilizado demasiado ampliamente por personas que no son geólogos.
✅ 正确答案
Its defining markers may not occur uniformly worldwide.
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