Researchers have recently suggested which of the following as likely mechanisms whereby physical activity (PA) lowers cancer risks?
A) ?PA inhibits the initial formation of cancer tumors.
B) ?PA inhibits the growth of existing cancer tumors.
C) ?PA inhibits release of proinflammatory cytokines.
D) ?PA inhibits each of these cancer-related processes.
D
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Ethologists emphasize ____ among individuals' development, while behavioral learning theorists emphasize ____
a. quickened speed; accuracy b. variations; consistencies c. experiential effects; biological maturation d. similarities; differences
Theories of aging that focus on how external factors damage our body are usually referred to as biological clock theories
Indicate whether the statement is true or false
Joe is unable to see blues and yellows but can distinguish between reds and greens. He has
a. only cones in his retina and no rods. b. an extremely rare form of color weakness. c. visual agnosia. d. only rods in his retina and no cones.
"Sexual socialization" refers to
A. a person's social skills in sexual relationships. B. the degree to which an individual is comfortable with his or her sexuality. C. the way in which an individual is exposed to and educated about sexuality. D. a person's sexual orientation.