A wave breaks against shore when the ratio of wave height to water depth is about ____
a. 1:3
b. 1:7
c. 2:3
d. 2:5
e. 3:4
e
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In the figure below, two people are looking at the same point in the sky. Which of the following types of light does person A see?
A. unscattered light B. scattered light
The form of nitrogen used by plants to produce various amino acids, proteins, nucleic acids, and vitamins is ____.
A. ammonium ions B. nitrogen gas C. proteins D. nitrites E. nitrate ions
Which one of the following applies to a valley glacier that lengthens (extends the position of its terminus downslope) over a period of many years?
A) wastage exceeds accumulation B) accumulation and wastage are about equal C) accumulation exceeds wastage D) none of the above
A locked section of fault is often identified by
A. a seismic gap. B. tsunamis. C. creep. D. liquefaction.