Which of the following is most closely related to stream "stage"?
A. velocity
B. depth
C. discharge
D. width
Answer: B
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Which of the following statements best illustrates bias in scientific investigations?
A) Investigations of the cause of AIDS are limited by our inability to see viruses. B) Investigations of the health effects of smoking are funded and published by a tobacco company. C) An experiment testing the effect of a new drug has only one control group. D) Researchers studying heron nests notice that some baby herons fall out of nests and are killed.
In comparison to the amount of atmospheric oxygen inhaled in a normal breath, one breath of pure oxygen from a tank provides how much oxygen?
A. five times as much B. twice as much C. half as much D. one-fifth as much
Which of the following amino acids cannot be synthesized from glutamate?
A) alanine B) asparagine C) serine D) tyrosine
Services tend to be capital intensive
Indicate whether the statement is true or false