Why do centers for the domestication of animals coincide with centers of origin for cultivated plants?

The domestication of animals and the creation of new plant cultures took place in human habitats. It was people who created new plant cultures using artificial selection of the necessary plants. People were also engaged in the domestication of animals. So they received not only food: meat, milk, eggs and so on. Thanks to domestication, man received traction, animals that could help man in the protection of other animals, as well as animals that had only an aesthetic meaning and did not give man material things.