Which of the following was the outcome of muir's camping trip with president theodore roosevelt?

a. the passage of the national forest act
b. the creation of yosemite national park
c. the establishment of the sierra club
d. the dedication of mt. muir

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?