Bats and dinosaurs are paleontologists. Why didn't bats become extinct?

Darwin said that? Natural selection, survival of the fittest This is the basis of natural selection and elimination. Dinosaurs and bats are two kinds of creatures in nature, and naturally they can't escape this law. The extinction of dinosaurs was the result of natural selection. As the overlord of the earth at that time, dinosaurs could not keep up with the pace of natural selection and became extinct. It can be considered from these aspects: first, the volume reason; The second is the physiological structure; The third is species struggle.

Let's talk about size first. Dinosaur is by far the biggest creature. He eats a lot a day. There is a saying about the theory of dinosaur extinction that with the change of climate, dinosaurs could no longer find something to eat and could not meet their own physiological needs, which led to the mass extinction of dinosaur groups. Compared with dinosaurs, bats are very small and their food is more complicated. Food in the air and on the ground can be eaten, so the bat survived.

Secondly, there are great differences in physiological structure between them. According to the theory of dinosaur extinction, due to the acceleration of the earth's rotation, the earth's temperature dropped sharply. For dinosaurs, it was a cold-blooded animal, with no warm fluff on it, so it could not adapt to the sudden change of climate and froze to death. But for bats, its environment is relatively cold, wings can wrap the whole body, or fly to narrow caves to keep warm.

Third, according to legend, the extinction of dinosaurs may also be due to species struggle. Some new mammals appeared and ate all the eggs of dinosaurs. The dinosaurs gradually became extinct and there were no offspring. Bats are active at night, and their living space is relatively secret. For its offspring, these mammals can't be found, so bats have accumulated a certain number of groups.

There are still many theories about dinosaurs dying and bats staying behind, but it will eventually come down to dinosaurs adapting to nature too slowly, bats have wings and can fly to warm places when the climate changes, but it is obviously impossible for dinosaurs to migrate on a large scale. We can't know whether the ancient bats are what they are now. How can the modern bats not be the result of evolution?