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 average speeds of gas particles as a function of temperature for various gases.Which gas(es) plotted in the diagram could be retained in the atmosphere of Mars? 
A) only CO2
B) only NH3
C) CO2,NH3,and O2
D) only H2
E) H2 and He
Correct Answer:
Verified
Q2: How rapidly a planet loses its atmosphere
Q3: Venus has a radius of approximately 6,100
Q6: In contrast to Earth,reasons oxygen does not
Q8: Which of the following are not found
Q9: One hypothesis suggested the explanation of the
Q10: Major factors causing the Martian atmosphere to
Q11: Coronae on Venus are believed to be
A)impact
Q11: The greenhouse effect keeps Venus hot because
A)
Q12: The geology of Venus appears to be
Q16: Measurements of the magnetic field of Venus
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