Two of North and West Africa's most valuable were and A . ransports, iron and military B . commodities, weapons and salt C . commodities, gold and salt D . connections, gold and salt​

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?