According to the solar nebula theory, planetary development in ...

[littleanan]

According to the solar nebula theory, planetary development in the solar nebula began with:
 
  A) the growth of dust grains.
  B) the formation of ice caps.
  C) the fission of helium atoms.
  D) the fission of hydrogen atoms.

Question 2

The ice line is:
 
  A) the freezing point of water in Venus's atmosphere.
  B) a region in Mars beyond which liquid water exists as permafrost.
  C) a boundary in the Solar System beyond which the water vapor could freeze.
  D) the temperature at which the ice in the polar caps of Mars turns into liquid water.

[mbcrismon]

Answer to Question 1

A

Answer to Question 2

C

[littleanan]

Thanks for the timely response, appreciate it

[Jsherida]

Great answer, keep it coming