The ultimate cause of jet streams is
a. ?the fact that water can exist in all three phases at once.
b. ?ultraviolet energy from the Sun.
c. ?the energy imbalance between high and low latitudes.
d. ?the instream of cold waters from the poles.
e. ?global warming.
ANSWER: c
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Orographic lifting occurs where sloping terrains, such as mountains, act as barriers to the
flow of air. Indicate whether the statement is true or false
Evidence supporting the hypothesis of continental drift
What will be an ideal response?
Analysts vary as to their opinion of which factor is the more serious threat to the Earth's life support systems: ____________________ or ____________________
Fill in the blank with correct words.
What advantages are there to synthesizing a naturally occurring medicine, such as Taxol, in the laboratory rather than isolating it from nature?
A. Synthesizing a natural product can be advantageous when the source of the natural product is rare and thus not readily available. B. In synthesizing the natural product in the laboratory, the chemist is able to create closely related compounds that may have even greater medicinal properties. C. In synthesizing the natural product in the laboratory, a chemist can increase the concentration of the synthetic beyond that of natural product to insure maximum potency for good health. D. Both A and B are true.