Which of Washington’s regions are the largest in terms of land size? Puget Lowlands and Okanogan Highlands
Cascade Mountains and Puget Lowlands
Cascade Mountains and Columbia Basin
Columbia Basin and Okanogan Highlands

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?