How is motocross related to geography

Why does a tidal bulge occurs on opposote sides of earth

Which region was the hearth for the largest number of agricultural animals such as pigs sheep and cows

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?