During the global winter caused by the asteroid impact, temperatures fell below freezing.
Sources
- 30 Seconds May Have Made All the Difference for Dinosaurs | HISTORY (history.com)
- https://www.lpi.usra.edu/science/kring/Chicxulub/global-effects/ (lpi.usra.edu)
- https://news.agu.org/press-release/dinosaur-killing-asteroid-impact-may-have-cooled-earths-climate-more-than-previously-thought/ (news.agu.org)
- https://www.sciencedirect.com/science/article/pii/0012821X94901864 (sciencedirect.com)
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