A common explanation for the loss of dinosaurs holds that an asteroid impact 66 million years ago triggered global cooling that the animals could not survive. Recent paleontological research suggests this single-cause story is incomplete. Many dinosaur lineages were already in decline before the impact, likely due to massive volcanic activity altering global climate. The impact may have been less the cause than the final blow.
Which choice best states the main idea of the text?
- Acheck_circle
Recent research suggests dinosaur extinction had multiple, overlapping causes rather than a single one.
- B
Dinosaurs are not extinct.
- C
Volcanic activity is more dangerous than asteroids.
- D
An asteroid alone caused the dinosaurs' extinction.
Explanation
The passage carefully reframes the single-cause story as multi-causal — B. A is the view revised; C overstates; D contradicts.