Carbohydrates. lipids, proteins, and nucleic acids all have different structures and functions, but are all formed around which type of atom? a. oxygen b. hydrogen c. carbon d. nitrogen

The answer is c. carbon :) hope this helps. 

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.