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.
❓ According to the passage, what is the primary reason for the controversy surrounding the formal recognition of the Anthropocene?
A. A) The proposed markers, such as plastic pollution, are not detectable in geological records.
B. B) Human activities vary too much in type and timing to form a consistent geological boundary.
C. C) Geologists cannot agree on the start date of the Anthropocene due to lack of evidence.
D. D) The concept ignores natural events like ice ages that have shaped Earth's history.
✅ 正确答案
B) Human activities vary too much in type and timing to form a consistent geological boundary.
IELTS Reading Tips
Skim the questions first, underline keywords, then locate in the passage
Watch for paraphrasing; correct answers are often reworded
Be wary of absolute statements (all, always, never) — usually wrong
Pay attention to content after transition words (however, but, yet)
Manage time: about 20 minutes per passage; skip difficult questions first