____________________filters are composed primarily of fossilized remains of diatoms, a type of hard-shelled algae, which coat a fabric to form the filtering material.
Fill in the blank(s) with the appropriate word(s).
ANSWER: Diatomaceous earth
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List four things a process technician can do to monitor equipment and guard against hazards.
What will be an ideal response?
Roots growing in soil cannot remain under water because they will not receive oxygen and will not
perform ____.
a. photosynthesis c. transpiration b. nutrient uptake d. cation exchange
Compared to the over-fire draft, the stack draft should be:
A) A positive pressure. B) More negative than the over-fire draft. C) About the same as the over-fire draft. D) Less negative than the over-fire draft.
The amount of attracting or repelling force that acts between two electrically charged bodies depends on two factors: their charge and the ____________________ between them.
Fill in the blank(s) with the appropriate word(s).