The speed of an airplane caught in a right-angle crosswind
A. remains unchanged.
B. decreases.
C. increases.
D. cannot be estimated.
Answer: C
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A banana is produced in one country, where it is grown using a pesticide that is banned in a second country. If it is shipped to the second country with some residue of the pesticide still remaining, then that would be an example of the____________________.
Fill in the blank(s) with the appropriate word(s).
Sea otters play a role in maintaining the biodiversity of which ecosystem?
a. Tidepools b. coastal kelp forests c. coastal sandy beaches d. open ocean areas e. Estuaries
Which of the following is believed to have been the world's most violent stage 1 epidemic?
A) HIV/AIDS B) The Black Plague C) Malaria D) Tuberculosis E) Mad cow disease
Which of the following descriptions does not specifically apply to sediments carried away from the glacier by meltwater streams?
A) Deposited in stratified layers B) Composed of clay-rich materials C) Often well sorted D) Composed of sands and gravels