When an airplane flies at 141 km/h toward the northeast, the component of velocity due north is
A. 100 km/h.
B. 110 km/h.
C. 141 km/h.
D. 41 km/h.
Answer: A
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In open water, the dominant producers are
A. trees. B. ferns. C. fish. D. grasses. E. phytoplankton.
Climatic complementarity helps explain why a retiree spends summers in the north and winters in the south
Indicate whether this statement is true or false.
How does increased cloud cover cause an increase in the Earth's average surface temperature? How does increased cloudiness cause a decrease in average surface temperatures?
What will be an ideal response?
Historically, world food production increased primarily by:
A) expanding the amount of land devoted to agriculture B) improving the number of people engaged in agriculture C) increasing the amount of money invested in agriculture D) seizing more land from poor people E) none of the answer choices are correct.