The increase in trade and commerce during the middle ages resulted in

How many countries have portuguese as a national language?

Determine which of the two measurements in each set is lesser.10°f or 20°ca. 10-fb. 20°c

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?