All of the following are major steps in the treatment of a community's drinking water except:
A) boiling.
B) filtration.
C) flocculation.
D) sedimentation.
A) boiling.
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Regarding soil and organic matter in humus, which of the following statements is true?
A) Humus is composed of inorganic nutrients, and organic matter is composed only of organic matter. B) Soil organic matter is completely decayed. C) Completely decayed soil organic matter is called humus. D) Eventually, the nutrients in soil organic matter are converted to organic form.
Contraction of the biceps muscle
a. extends the arm. b. extends the leg. c. flexes the arm. d. flexes the leg. e. works with the triceps muscle.
A unique feature of the ________ that distinguishes them from other bacteria is their ability to move through highly viscous liquids.
Fill in the blank(s) with the appropriate word(s).
The amateur scientist (Koch/Leeuwenhoek/Pasteur) made his own microscopes and first reported the existence of microbes.
Fill in the blank(s) with the appropriate word(s).