Astronomers now speculate that a galaxy's shape depends on all of ...

[SGallaher96]

Astronomers now speculate that a galaxy's shape depends on all of the following except
 
  a. the rate of star formation.
  b. the history of past collisions.
  c. the mass.
  d. All of the other choices may be important in determining a galaxy's shape.

Question 2

Main-sequence stars many times the mass of the Sun produce their energy by the set of nuclear reactions called the CNO cycle.
 
  a. True
  b. False
  Indicate whether the statement is true or false

[morganmarie791]

Answer to Question 1

d

Answer to Question 2

True