Thanks to the evolution of human ancestors' efforts, human beings have stood at the top of the food chain, without having to run around for food and reproduction, and constantly duel. Exchange your life for a mouthful of water and a mouthful of food. Humans have entered a higher class, but this has also led to over-breeding of humans, leaving other species with nowhere to go. Need to reflect, one of our knowledge species, the over-breeding of any one species is a disaster.
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