Which of the following features of a wave may change during its existence?
A. Height
B. Height and speed
C. Period
D. Speed
E. Wavelength
Answer: B
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Calcite dissolves more readily in seawater that is ________ in temperature and ________ in pressure
A) colder; higher B) colder; lower C) warmer; higher D) warmer; lower
If we were to lower our rate of CO2 production by a third-down from 9 to 6 billion tons per year-the concentration of CO2 in the atmosphere should
A. reach a steady state. B. continue to increase. C. start to decrease. D. It depends upon whether there are any major volcanic eruptions.
Which of the following is considered one of the outer planets?
A. Venus B. Jupiter C. Mars D. Moon E. None of these choices are correct.
Most of the world's freshwater is stored in surface lakes and streams.
a. true b. false