Travertine is a type of freshwater ________.
A. chert
B. limestone
C. sandstone
D. conglomerate
E. shale
Answer: B
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The gradual establishment of communities in areas where soil did not previously exist is known as ____________________.
Fill in the blank(s) with the appropriate word(s).
Sunlight reflecting off ice crystals produces ____
A) crepuscular rays B) halos C) sun pillars D) sun dogs
Which of the following organizational structure works best for companies that wish to organize according to the types of customers they serve?
A) functional orientation B) product orientation C) geographic orientation D) customer orientation E) matrix orientation
Cytokines perform which of the following functions?
A) bringing leukocytes to injured tissue B) helping leukocytes migrate out of the blood vessels C) activate leukocytes D) all of the above