Which of these does Mars NOT have to help its case of past or present life?
A) occasional water flows, and past records of much larger ones
B) a protective ozone layer
C) carbon dioxide to provide some greenhouse warming
D) a favorable distance from the Sun
E) rover discoveries of sedimentary rocks and carbonates on the surface of Mars
B
You might also like to view...
Choose the correct word(s) that make the statement true. The stars appear to rise and set from east to west, but really the sky is not moving and Earth is rotating from (north, south, east, west) to (north, south, east, west)
What will be an ideal response?
Which one of the following objects is most like the planetesimals that formed in the solar nebula?
a. asteroids b. Earth c. Saturn d. Venus e. the Sun
An constant electric field, 
N/C, goes through a surface with area 
m2. (This surface can also be expressed as an area of 10 m2 with the direction of the unit vector
src="https://sciemce.com/media/2/ppg__cognero__Chapter_25_Gauss_apos_s_Law.__media__7d94a3f5-3b36-4dc7-aedd-c86064e2bc84.PNG" style="vertical-align:middle;" />. What is the magnitude of the electric flux through this area? A. 24 N ? m2/C B. 48 N ? m2/C C. 0.24 N ? m2/C D. 0.48 N ? m2/C E. 0
Voyager 1 was unable to image Titan's surface because
A) of "smog" in Titan's atmosphere. B) volcanic activity spewed sulfur clouds, obscuring the surface. C) of Titan's high reflectivity. D) the cameras were damaged by Saturn's magnetic field. E) the moon was in shadow during the mission.