In this world, is there a chicken first, or an egg first? This is an old polemic puzzle. It also provokes people to constantly explore the origin of life.
A lot of scientific explanations: there are eggs before there are chickens. Because in the beginning there were no chickens in this world, so how did the chickens come from? This also goes back to the age of the dinosaurs, it was the dinosaurs that evolved into birds, due to the extinction of the dinosaurs and a large number of volcanic eruptions, many birds became new species, and then the birds slowly evolved into chickens, which was due to the "genetic mutation" of the birds that produced the first "egg". From this bird egg, which is not an egg, it slowly evolves into a chicken.
Canadian scientist Dara Zelensky pointed out after studying dinosaur egg fossils from 77 million years ago: Dinosaurs first built nests similar to bird's nests, laid eggs similar to bird eggs, and then dinosaurs evolved into birds (including chicken ancestors), which indicates that eggs appeared before chickens. Chickens evolved from these egg-like carnivorous dinosaurs.
The answer is: there are eggs before there are chickens.