The average number of children born to a woman during her lifetime is known as:
a. age structure.
b. replacement-level fertility.
c. natality.
d. total fertility rate.
e. infant mortality rate
d
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What will be an ideal response?
Which one of the following incorrectly matches a molluscan structure with its typical function?
A. ctenidia—secretion of the shell (when present) B. visceral mass—houses organs of digestion, excretion, reproduction C. foot—locomotion D. nephrostome—collection of nitrogenous wastes E. radula—feeding organ
Which of the following is least likely to result in a release of epinephrine (adrenaline) from the adrenal glands?
A. Competing in an athletic event B. going out on a first date C. Falling asleep during a lecture D. Swimming in a very cold pool E. taking a test while unprepared
If structure A is closer to the body surface than structure B, we say A is ________ to B and B is ________ to A.
Fill in the blank(s) with the appropriate word(s).