What surface features do Mars and Earth have in common?
What will be an ideal response?
Most of the Martian landscape resembles Earth's rocky deserts, with abundant dunes and low areas partially filled with dust. Mars also has valleys that resemble deep arroyos found on Earth.
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In the 1970s, sources of CFC pollution in the U.S. included all of the following EXCEPT ________
A) air conditioners B) refrigerators C) polystyrene manufacturing plants D) coal-burning power plants E) aerosol spray cans
To see his full height in a mirror, Blinky Bill of height 1.0 meter requires a mirror that is at least
A. 1 m tall. B. 0.50 m tall. C. 0.75 m tall. D. depends on distance from the mirror
Which type of waves are called “body waves” because they move through the interior of Earth?
a. ?P waves only b. ?S waves only c. ?surface waves only d. ?S waves and surface waves e. ?S and P waves
The 2004 ________ Ocean tsunami killed an estimated 245,000 people in 13 countries.
A. Indian B. Arctic C. Southern D. Atlantic E. Pacific