Which of the following is true of planets?
A) They are self-luminous balls of hot gases.
B) They generate their own energy.
C) They are of identical size.
D) They are nonluminous bodies.
Question 2
2.36 108 is equal to _____.
A) 23,600,000
B) 236,000,000
C) 2,360,000,000
D) 23,600,000,000