3. The Big Bang Theory allows scientists to extrapolate back in time and conclude that the universe
Select the two that apply.
A. was hotter and denser in the past
B. was cooler and less dense in the past
C. consisted primarily of carbon and oxygen in the past
D. consisted primarily of iron and nickel in the past
E. emerged from a very tiny region and expanded
F. consisted of one star with eight orbiting planets