The concept of the 'Anthropocene' has gained traction among geologists as a proposed new geological epoch, characterized by significant human impact on Earth's geology and ecosystems. Unlike previous epochs, which were defined by natural climate shifts and biological evolution, the Anthropocene is marked by human-induced changes such as nuclear fallout, plastic pollution, and elevated carbon dioxide levels. Proponents argue that these markers are stratigraphically distinct and will be preserved in the rock record, justifying a formal designation. However, skeptics contend that the term is more cultural than scientific, noting that human activities have altered the environment for millennia, and that the proposed markers may not be globally synchronous. This debate underscores the challenge of defining geological time in an era of rapid planetary change, raising questions about the intersection of science, policy, and human responsibility.
❓ According to the passage, what is the main reason skeptics question the formal designation of the Anthropocene as a geological epoch?
A. A. Human impact on the environment has been too gradual and uniform to be clearly identified.
B. B. The proposed markers may not occur at the same time across the globe, and the term may be more cultural than scientific.
C. C. Nuclear fallout and plastic pollution are not significant enough to alter geological strata.
D. D. The concept of the Anthropocene has already been rejected by most geologists due to lack of evidence.
✅ 正确答案
B. The proposed markers may not occur at the same time across the globe, and the term may be more cultural than scientific.
IELTS Reading Tips
Skim the questions first, underline keywords, then locate in the passage
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