The following text is about environmental science.
The Anthropocene, a proposed geological epoch, would recognize that human activity has become a global force shaping Earth's geology and ecosystems. Proponents point to radioactive isotopes from nuclear testing, microplastics distributed worldwide, and altered nitrogen and phosphorus cycles as markers distinguishing our era from the Holocene. The International Union of Geological Sciences debated recognition, though a recent vote rejected formal adoption. Regardless of official designation, the concept has transformed how scientists and the public think about humanity's relationship with the planet.
What is the significance of the Anthropocene concept according to the text?
It has been universally adopted by all scientific bodies
It has changed thinking about humanity's planetary impact regardless of formal recognition
It only describes events from before human existence
It focuses exclusively on radioactive isotopes
Correct Answer: B
Choice B is the correct answer. The text states "regardless of official designation, the concept has transformed how scientists and the public think about humanity's relationship with the planet."
- Evidence: Transformed thinking despite rejection of formal adoption.
- Reasoning: Conceptual impact transcends official recognition.
- Conclusion: Significance lies in changed perspective, not formal status.
Choice A is incorrect because formal adoption was recently rejected. Choice C is incorrect because it recognizes human activity as a geological force. Choice D is incorrect because plastics, nitrogen, and phosphorus are also mentioned.