__________________ is an animal relationship in which one benefits and the other is not harmed
Fill in the blank(s) with correct word
Commensalism
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Which of the following is true regarding material hoisting?
a. A five-gallon bucket is ideal for this purpose. b. Secure loose materials with a rubber band before hoisting overhead. c. Use a bolt bag to hoist loose materials. d. Tape tools to structural members when hoisting overhead.
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Are all backflow preventers capable of protecting against back-pressure conditions?
What will be an ideal response?
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Why do contractors often favor a trussed roof system?
What will be an ideal response?
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Photosensitive dye on a reflective gold layer is a characteristic of
A) floppy disk. B) hard drive. C) CD-R. D) CD-ROM.
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