List two annual flowers commonly grown as greenhouse crops
What will be an ideal response?
Cakeolarias and cinerarias
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Spacing of smoke detectors on flat surfaces can be a distance of up to _________.
A. 10ft. B. 30ft. C. 50ft. D. 100ft.
The density of air is the ____.
A. amount of moisture in the air B. amount of movement in the air per cubic foot C. weight of the air per cubic foot D. combination of the temperature and pressure of the air
Explain why copolymers of ethylene and propylene can be elastomers when the pure polyethylene and pure polypropylene are not elastomeric. Discuss whether you would expect a blend (instead of a copolymer) of polyethylene and polypropylene to be elastomeric
What will be an ideal response?
A(n) ____________________ retractor uses a gas-generating retractor to develop pressure for quickly taking up slack in a seat belt when a collision is detected.
Fill in the blank(s) with the appropriate word(s).