44. The Earth is called "living planet" because it has
A. atmosphere that supports life
B. water in its thin atmosphere
C. atmosphere made mostly of carbon
dioxide
D. thick atmosphere composed of
hydrogen and helium
C
45. Which of the following is TRUE about all the planets
in the Solar System?
A. All can sustain life.
B. All have the same speed.
C. All revolve around the Sun.
D. All have the same atmosphere.
46. What planet takes the shortest period of revolution
around the Sun?
A. Mars
C. Jupiter
B. Earth
D. Mercury​