Acomplete digestive system is found in bears. how is the undigested food removed from a bear? a. limbs are used to remove the waste. b. the one opening is dual purpose for intake and removal. c. the skin excretes waste. d. an opening specified for waste removal is present.

Heyhonestly, probably not. humans have always had a tendency to waste things. whether it's food, cosmetic, infrastructure, or our abandoned constructions,the landscape is littered with the refuseof man. archaeology wouldn't be a developed discipline if humans didn't leave things behind. in a way it makes us human

hope it mark me as brainlieast.