Evidence that tidal interactions and collisions of galaxies may ...

[nummyann]

Evidence that tidal interactions and collisions of galaxies may make ordinary galaxies active is that
 
  a. many active galaxies are distorted.
  b. some active galaxies have companions.
  c. many active galaxies are distorted and some active galaxies have companions.
  d. active galaxies are neither distorted nor have companions.

Question 2

The explosion of a supernova type II can leave behind
 
  a. a planetary nebula.
  b. a shell of hot, expanding gas with a white dwarf at the center.
  c. a shell of hot, expanding gas with a neutron star at the center.
  d. Nothing is ever left behind.

[Dunkey]

Answer to Question 1

c

Answer to Question 2

c

[nummyann]

Thanks

[Dunkey]

Welcome