What observation of extrasolar planetary systems provides strong ...

[haleyc112]

What observation of extrasolar planetary systems provides strong confirmation of the condensation theory?
 
  What will be an ideal response?

Question 2

Which observation(s) and/or experiment(s) demonstrate ways that the chemical building blocks of life (amino acids and DNA bases) could have originated on the early Earth?
 
  A) Amino acids and DNA bases form from simple chemical reactions in experiments simulating the early Earth atmosphere.
  B) These complex molecules have been found within meteorites.
  C) Experiments have shown that naturally occurring clays can catalyze the formation of RNA strands.
  D) All of the above

[helenmarkerine]

Answer to Question 1

Stars having compositions similar to that of the Sun are much more likely to have formed planets than stars that are poorer in metals.

Answer to Question 2

D