Land, fresh water, air, and heavy metals.
The answer is c. hope it helps
Don’t go off this answer wait for confirmation but maybe literacy rate
The benefit received from paying less for a good than the maximum amount that the person is willing to pay for it. Thus, if a person is willing to pay up to $3 for something, but the market price is $1, then the net economic benefit for that item is $2.
In 1976, the United States of America celebrated it's Bicentennial. Good luck on your homework.
