Clouds, dew and frost all form because air has become saturated. ...

[jhjkgdfhk]

Clouds, dew and frost all form because air has become saturated. This condition of saturation is USUALLY caused by:
 
  A) lack of convective mixing.
  B) a temperature increase.
  C) the air being cooled.
  D) an abundance of condensation nuclei.
  E) adding water vapor.

Question 2

Over the course of this year, the tilt of Earth's polar axis will:
 
  A) remains constant at 90 degrees. B) vary from 0 to 47 degrees.
  C) remain constant at 23.5 degrees. D) vary from 0 to 23.5 degrees.

[Toya9913]

Answer to Question 1

C

Answer to Question 2

C

[jhjkgdfhk]

Great answer, keep it coming

[bitingbit]

Thanks for the timely response, appreciate it