The use of smokeless tobacco
A) ?carries about the same risks for lung cancer as does cigarette smoking.
B) ?carries about the same risks for heart disease as does cigarette smoking.
C) ?is similar to cigarette smoking in onset, use, social influences, and quit attempts.
D) ?is similar to cigarette smoking in terms of user gender and age and quit attempts.
C
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According to a study cited in the textbook, what proportion of adolescents who were very aggressive when they were younger drop out of high school before graduation?
1/2 3/4 2/3 1/3
In the development of the cerebral cortex
A. intrinsic genetic factors control all differentiation. B. extrinsic inducing factors control all differentiation. C. a combination of intrinsic genetic factors and extrinsic inducing factors controls differentiation. D. neither intrinsic genetic factors nor extrinsic inducing factors appear to play a role in differentiation.
Much of the loss of neural tissue associated with aging occurs in the myelinated structures of the white matter. The result of this is:
a. Increased myoneural junction transmission rate b. Reduced psychomotor speed c. Reduced persistence in motor tasks d. Increased muscle atrophy
Most people are dextrals, but some are __________
Fill in the blank with the appropriate word.