The is the uppermost layer of the earth���s crust and consists of organic matter, liquids, minerals, and gases.
a. mantle
b. atmosphere
c. soil
d. magma

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?