Although energy flows in one direction in an ecosystem, nutrients ____ through an ecosystem
a. move from consumers to producers
b. drive the energy flow
c. build up
d. deteriorate
e. cycle
ANSWER: e
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Narrow annual rings in a tree indicate what environmental event?
a. Mild temperatures b. Abundance of sunlight c. Excessive flooding d. Fire went through the community e. Severe drought
Uneven curvature of the corneas causes
a. cataracts. b. myopia. c. hyperopia. d. trachoma. e. astigmatism.
The plasma membrane is constructed in layers, with the protein layer innermost, the cholesterol layer in the middle, and the phospholipid layer outermost
Indicate whether the statement is true or false
When immune complexes in the blood become trapped in the kidneys the resulting disease is known as
A. type I hypersensitivity. B. hemolytic disease. C. glomerulonephritis. D. dermatitis. E. anaphylaxis.