Mercury. 3. Which of the planets fits the following description: Cool, solid surface with an atmosphere of N2 and O2, and H2O clouds?

A) Mercury. 3. Which of the planets fits the following description: Cool, solid surface with an atmosphere of N2 and O2, and H2O clouds? A) Mercury. B) Venus. C) Earth. D) Mars. Which of the following objects rotates the most quickly around its own axis?