Why are frogs said to have "two lives? "

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?

East asia’s is dominated by dry highlands and grasslands. a. north and east c. north and west b. south and east d. south and west

How has plate tectonics affected the climate of south america?