Over time, which of the following has happened to Niagara Falls?
a - they have migrated several kilometers upstream
b - they have migrated several kilometers downstream
c - they have drained away most of Lake Ontario's water
d - they have become rapids
e - they have evolved into the world's most famous example of stream capture
b - they have migrated several kilometers downstream
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In most areas, which of the following times of the day is warmest about 5 metres above the ground?
A. around noon B. in the afternoon between 3:00 and 5:00 p.m. C. in the early evening after 6:00 p.m. D. just before sunset
A pronounced gender imbalance is most recognizable in
A) Denmark. B) India. C) Singapore. D) Japan. E) the United States.
The meridian opposite of Earth's prime meridian (0° longitude) is called
A) secondary meridian. B) the International Date Line. C) Tropic of Cancer. D) the equator. E) the anti-meridian.
Woody shrubs (called chaparral or maquis) and widely spaced, stunted trees with occasional patches of bunchgrass are the dominant vegetation types in:
a. tropical rainforest and tropical savanna borders. b. humid continental climates. c. desert climates. d. Mediterranean climates.