An activator that is responsive to an inhibitor:
a. is under negative control
b. is in it's active state until the inhibitor is present
c. has an allosteric site
d. all of the above are correct
e. two of the above are correct

Cis your correct answer

Iwould say silver and gold

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.

This is the most closely resembles the model.