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 were delineated by natural climatic shifts or biological events, the Anthropocene is marked by anthropogenic markers such as 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 impacts, while profound, are not yet stratigraphically distinct enough to warrant a new epoch, as many changes are still in flux. Proponents counter that the scale and permanence of human alterations, including species extinction rates and terraforming activities, justify a distinct boundary. This debate underscores a broader tension between scientific classification and the growing awareness of humanity's role as a geological agent.
❓ Согласно тексту, какова основная причина споров вокруг официального признания антропоцена новой геологической эпохой?
A. A. Воздействие человека пока недостаточно масштабно, чтобы повлиять на глобальные экосистемы.
B. B. Некоторые учёные сомневаются, что изменения, вызванные деятельностью человека, являются стратиграфически различимыми и достаточно постоянными.
C. C. Предложенная эпоха не имеет чётких маркеров, таких как радиоактивные изотопы или загрязнение пластиком.
D. D. Критики считают, что естественные климатические изменения более значительны, чем деятельность человека.
✅ 正确答案
B. Some scientists doubt that human-induced changes are stratigraphically distinct and permanent enough.
IELTS Reading Tips
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