Giving crown for correct answer ! 20 points

some consumers have limited money to spend on a large supply of potential products. the idea that a consumer needs to pick how to use a scarce resource is known as

a. demand

b. choice

c. scarcity

d. opportunity cost

Ascientist is explaining how background cosmic radiation gives evidence of the big bang theory. she says that radiation has been detected everywhere equally as heat in the universe and is increasing. this has been shown to be residual radiation from the big bang. what error did the scientist make?