(Question)
Q: What do you call egg-shaped galaxies, which are reddish to yellowish in color because they contain mostly old stars? Choices: - conical galaxies - irregular galaxies - spiral galaxies - elliptical galaxies A:
(Answer)
elliptical galaxies

(Question)
Q: What is the most important element to life? Choices: - oxygen - hydrogen - nitrogen - carbon A:
(Answer)
carbon

(Question)
Q: Splitting of the nucleus of a radioactive atom into two smaller nuclei yields what type of reaction, which releases a great deal of energy from a small amount of matter? Choices: - solar fission - nucleation - nuclear fusion - nuclear fission A:
(Answer)
nuclear fission