The graph below plots the escape velocity of each planet along the vertical axis and its surface temperature along the horizontal. The lines plotted in the figure are the speeds of the fastest gas particles as a function of temperature for various gases. Which of the gases plotted in the diagram could be retained in the atmosphere of Mars? 
Definitions:
Level Of Measurement
The scale or type of data that determines the kind of statistical analysis that can be used.
Frequency Distribution
A representation, often in graphical form, showing the number of observations within each given interval.
Sample
A subset of individuals or observations selected from a larger population for the purpose of conducting a study.
Dinner
A main meal typically eaten in the evening.
Q1: Dividends may fulfil a corporate governance role.<br>A)Forcing
Q5: The dirty snowball theory suggests that the
Q10: Two key limitations of the proprietorship form
Q12: Where did the cosmic microwave background (CMB)
Q23: If the spiral density wave were the
Q26: Which of the following statements is incorrect?<br>A)
Q37: Which of the following statements is most
Q48: At Jupiter's very center is a core
Q55: What does the presence of the Widmanstätten
Q66: The _ of a planet is the