Back then in the colder climates our body hair was long and the reason we today have goosebumps, they helped us scare off small predators and keep us warm. Same goes for our wisdom teeth and the appendix but they had a different uses.
Back then in the colder climates our body hair was long and the reason we today have goosebumps, they helped us scare off small predators and keep us warm. Same goes for our wisdom teeth and the appendix but they had a different uses.