The vertical distance between adjacent wave crest and wave trough is called
A) wave height.
B) wavelength.
C) wave period.
D) wave base.
Answer: A
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Globally, approximately how many people are undernourished?
A) 1 billion B) 800 thousand C) 1 million D) 1 trillion E) 800 million
Initially, the mass of thunderstorms with only a slight wind circulation is known as a(n) ____________________, or tropical wave. It becomes a(n) ____________________ when the winds increase to between 20 and 34 knots and several closed isobars appear about its center on a surface weather map. When the isobars are packed together and the winds are between 35 and 64 knots, it further develops into
a(n) ____________________. The latter is classified as a(n) ____________________ only when its winds exceed 64 knots (74 mi/hr). Fill in the blank with correct word.
The use of enhanced recovery by an oil company
A) primarily depends upon the current market price of oil. B) is usually more cost effective than recovering oil using secondary recovery. C) has not yet been used because oil reserves remain abundant. D) is now routine, as every bit of oil is extracted from all available wells.
This term refers to a species that does not naturally occur in an area
a. alien species b. nonnative species c. exotic species d. invasive species e. all of these are correct