Virtually all the carbon-rich dust in the plane of the galaxy ...

[futuristic]

Virtually all the carbon-rich dust in the plane of the galaxy originated in
 
  A) low-mass stars.
  B) planetary nebulae.
  C) high-mass stars.
  D) brown dwarfs.
  E) white dwarfs.

Question 2

Pulsars are thought to be ________.
 
  A) unstable high-mass stars B) accreting black holes
  C) rapidly rotating neutron stars D) accreting white dwarfs

[af]

Answer to Question 1

A

Answer to Question 2

C

[futuristic]

Thanks for the timely response, appreciate it

[ghepp]

Gracias!