What would we do if all animals died out? What would we do if all animals died out?

Our world is a very fragile and complex set of living and nonliving components. The loss of one of them will entail irreversible consequences. If all animals disappear, then the circulation of substances in nature will be disrupted. Because all animals are consumers and reducers. And it is not worth building theories that humanity will invent any types of food, a replacement for animal protein, and so on. The death of all animals is tantamount to the death of all living things.