1The word ‘transient’ most nearly means:
Explanation: ‘Transient’ means lasting only a short time — a very common TOEFL vocabulary question type.
2A passage states: ‘While agricultural civilizations enabled population growth, they simultaneously introduced social hierarchies that had not existed in nomadic societies.’ The author implies that nomadic societies were:
Explanation: ‘Had not existed in nomadic societies’ implies hierarchies were absent — suggesting nomadic societies were more equal (egalitarian).
3Which sentence, if inserted into the passage, would MOST strengthen the argument that climate change accelerates species extinction?
Explanation: Specific quantitative evidence (1,000x higher extinction rates) directly supports the causal link between warmth and extinction.