Trace the flow of raw water through a typical drinking water purification scheme
What will be an ideal response?
Answer: Figure 21.19b illustrated in the textbook provides a complete answer. The general steps include: sedimentation of large particles, clarification or coagulation, filtration, and disinfection.
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Which of the following is the supportive element of hydrostatic skeletons?
A. a mineral matrix B. a hard outer covering C. a fluid-filled body cavity D. contractile proteins
The key hormone of childbirth is ____ , which is released from the posterior pituitary gland. It stimulates uterine contractions, which, in turn, stimulate more of it to be released
Fill in the blank with the appropriate word.
Blood velocity is slowest in the
a. arteries. b. arterioles. c. capillaries. d. venules. e. veins.
The mononuclear phagocyte system (MPS) is an intricate network throughout the body that comprises
A. connective tissue and monocytes. B. connective tissue fibers, mast cells, and basophils. C. connective tissue fibers and phagocytic white blood cells. D. connective tissue and lymphocytes.