What roles santa anna play in the texas revolution

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?

Answer this asap. why did the americans go to china? a. trading b. exploration c. land d. live stock

30% of the earths surface is made up of? a. water b. desert c. land d. cities