Food, clothing, tools, and shelter were mainly provided by harvesting wild plants and animals.
Humans are animals, and like all species, are totally dependent on natural resources for survival.
Humans are, have always been, and always will be a part of, and not apart from, nature. Humans evolved as omnivores - creatures that eat both plant and animal materials. Like bears, raccoons, and painted turtles, humans are also predators. All predators have developed specialized physical features for hunting through time, such as talons, claws, or venom. Lacking such well-developed, natural adaptations, humans use their intelligence as an advantage when hunting.