What was detected on Halley's Comet and observed on Hale-Bopp ...

[Lisaclaire]

What was detected on Halley's Comet and observed on Hale-Bopp that imply the possibility of life on Earth originating in space?
 
  A) DNA
  B) amino acids
  C) organic material
  D) nucleotide bases
  E) ammonia

Question 2

Gaps in the asteroid belt (often called Kirkwood gaps) are caused by
 
  A) tidal forces from the Sun.
  B) tidal forces from Jupiter.
  C) the competing gravitational tugs of Mars and Jupiter.
  D) orbital resonances with Jupiter.

[bhavsar]

Answer to Question 1

C

Answer to Question 2

D

[Lisaclaire]

Wow, this really help

[nanny]

Thanks for the timely response, appreciate it