The brain can infer the pitch of a sound from the:a
number of hair cells that are stimulated.
b. particular hair cells that are stimulated.
c. intensity with which the hair cells are stimulated.
d. intensity of the action potential produced by the stimulated hair cells.
e. fluid movements of the semicircular canals.
b
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Which of the following is the most likely explanation for why the human brain is capable of so much more than what would be required for evolutionary fitness?
A. The additional capabilities are by-products of what was necessary for evolutionary fitness. B. The additional capabilities were necessary for survival at one time. C. A larger brain means that additional capabilities will follow. D. None of the answer options is correct.
From this age structure diagram for India, it is likely that India’s population will ____
a. crash b. have a larger proportion of older individuals c. remain stable d. decrease e. increase
The radioactive decay of 14C produces
a. carbon 12. b. carbon 13. c. more carbon 14. d. nitrogen 14. e. oxygen 14.
An organism has inherited a mutation that causes a loss of follicles. What do you predict would be the effect in this individual?
A. The organism would lack feathers or hair. B. The organism would lack skin glands. C. The organism would lack mesoderm. D. The organism would lack the lateral line system