After a low of 300 in 1900, the population is now:
A. 100,000
B. 250,000
C. 500,000
D. 2 million
Answer: C
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_______ research how animal and plant parts and systems function
A) Physiologists B) Wildlife biologists C) Public-health microbiologists D) Ecologists
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____________________ are solid-state switches that contain no moving parts.
Fill in the blank(s) with the appropriate word(s).
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_______ files have a single series of parallel teeth teeth. They are used to produce a
smooth surface finish. A. Single-Face B. Double-cut C. Mill D. Rasp-cut
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Which situation most often results in hearing loss in a shop environment?
A. An individual incident. B. Improperly maintained air tools. C. Years of exposure to repetitive and excessive noise levels. D. Shop noise exceeding 160 decibels.
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