Measuring the amount of deuterium in the universe allows us to ...

[Redwolflake15]

Measuring the amount of deuterium in the universe allows us to set a limit on ________.
 
  A) the acceleration of the universe
  B) the total amount of mass in the universe
  C) the density of ordinary (baryonic) matter in the universe
  D) the current age of the universe

Question 2

We cannot see a new moon in our sky because ________.
 
  A) it is above the horizon during the daytime B) no sunlight is illuminating the Moon
  C) it is obscured by Earth's shadow D) a new moon is quite near the Sun in the sky

[ynlevi]

Answer to Question 1

C

Answer to Question 2

D

[Redwolflake15]

Thanks for the timely response, appreciate it

[steff9894]

Wow, this really help