The most well-known of the big five extinctions marked the end of the dinosaurs. The world saw a loss of 40% of genera and an estimated 76% of species. Overwhelming evidence suggests that the extinction was caused by a 10-km-diameter asteroid that struck Earth. The crater from this impact has been identified in the Yucatán Peninsula of Mexico, buried beneath more recent sedimentary rocks. This impact had a global effect, blocking sunlight for extended periods of time and affecting global climate. The extinction of the dinosaurs opened new ecological niches for mammals to take over.

Question

The most well-known of the big five extinctions marked the end of the dinosaurs. The world saw a loss of 40% of genera and an estimated 76% of species. Overwhelming evidence suggests that the extinction was caused by a 10-km-diameter asteroid that struck Earth. The crater from this impact has been identified in the Yucatán Peninsula of Mexico, buried beneath more recent sedimentary rocks. This impact had a global effect, blocking sunlight for extended periods of time and affecting global climate. The extinction of the dinosaurs opened new ecological niches for mammals to take over.
Rewrite in your OWN words
1 sentence

GPT 3.5 · Answer

The mass extinction that wiped out the dinosaurs was most likely caused by a large asteroid hitting Earth, leading to a significant loss of species and opening up opportunities for mammals to thrive in new ecological niches.