Electronic measurers use ____________________ to measure straight line distances

Fill in the blank(s) with correct word


ultrasonic sound waves

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The output frequency of the alternator is determined by the speed of the ____________________.

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

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The development of embryos from vegetative cells in tissue culture is ________.

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

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______________ toxins attack the bone marrow and blood system.

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

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__________ is the branch of science dealing with the complex relationships among living things and their and their environment

A) Geology B) Ecology C) ?Agriscience D) Forestry

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