The first birds and mammals appeared 135 million years ago during the ____________________ period
Fill in the blank(s) with correct word
Jurassic
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At what depth should a freezeproof hydrant be buried?
What will be an ideal response?
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The processing and distribution of food is a relatively small industry in the United States
Indicate whether the statement is true or false
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Extension lines are construction lines that are drawn a little heavier than ________ lines and are left on the drawing.
Fill in the blank(s) with the appropriate word(s).
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A quantitative measure of noise immunity is called noise ________
Fill in the blank(s) with correct word
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