Chemicals and hazardous substances controlled by the Toxic Substances Control Act (TSCA) include all of the following except . polychlorinated biphenyls

bisphenate

radon

asbestos

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?