In glass optical fibers, the index of refraction is approximately 1.46 to ____.

A. 1.48
B. 1.50
C. 1.51
D. 1.53


Answer: C

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A naturally occurring soil-borne bacterium that is widely used as a biological pesticide to control caterpillar and fungal gnat larvae is ________.

Fill in the blank(s) with the appropriate word(s).

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Using the conversion .03937 inches equals approximately 1 millimeter, approximately how many inches does 100 millimeters equal?

a. 937 b. 37 c. 6.25 d. 3.937

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Human use of energy most likely started with the hominid species, _______________ who lived between 1.8

million and _______________ years ago.

What will be an ideal response?

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Which type of bone may be approximately as large around as it is long?

a. Irregular bones c. Long bones b. Short bones d. Flat bones

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