Which of the following is not a main agent of erosion?
a. Permafrost
b. Ice
c. Wind
d. Streams
a
Physics & Space Science
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How does the Milky Way compare to other spiral galaxies in size?
What will be an ideal response?
Physics & Space Science
Star formation ceased first in the
A) nucleus. B) spiral arms. C) bulge. D) halo. E) Galactic disk.
Physics & Space Science
Three equal negative point charges are placed at three of the corners of a square of side d. What is the magnitude of the net electric field at the center of the square? (k = 1/4??0 = 8.99 × 109 N • m2/C2)
What will be an ideal response?
Physics & Space Science
What color are the stars with the hottest photosphere?
a. White b. Yellow c. Red d. Blue
Physics & Space Science