"Critical thinking----critical thinking tutorial Exercises"

1. Do you have a chicken or an egg first? From eggs can be changed to chicken, this is certainly set up, the chicken can also produce eggs, from the evolutionary perspective, eggs need to hatch to become chicken, if there is no chicken, who will hatch eggs? And inside the chicken belly, there is no egg at first, but evolutionary evolution, it may have eggs in the belly; doubt, is it possible that other species have laid eggs, eggs may be in a bad environment, the eggs inside the species produced by the compilation, into the chicken At least that is the egg to the chicken, although the egg is not out of the chicken, but by other species out of the egg. 　　

"Critical thinking----critical thinking tutorial Exercises"