Oceans cover approximately
A. 60% of the earth's surface.
B. 70% of the earth's surface.
C. 40% of the earth's surface.
D. 50% of the earth's surface.
Answer: B
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The __________ region is susceptible to earthquakes and volcanic activity, yet is home to the second largest metropolitan area in the United States, and known for a diverse and rich economic base.
-Pacific Coast -American Southwest -Mountain West -American South -New England and the Canadian Maritimes
Tornadoes are most likely to form in a conditionally unstable atmosphere with weak vertical wind
shear. a. true b. false
What is dispersion?
When excited electrons decay to ground state, hydrogen emits along distinctive line near the visible red. An astronomer observes what appear to be hydrogen emission lines from a distant star but they are in the infrared spectral band
She concludes ________. A) the star's hydrogen emission must be being absorbed by water in the atmosphere, which then re-emits in the infrared B) her instrument needs to be recalibrated C) the star must be moving very fast toward Earth D) the star must be moving very fast away from Earth