Besides friction or heat, what is created by rubbing two things together?

Often, we can cause the exchange of electrons, which creates charge.

For example, rubbing a rubber comb with a wool cloth will create charge on the comb, and it will attract small bits of paper.

Friction is the answer

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.