________ are the 120 to 125 million long and narrow receptors in the retina that enable us to see even in dim light
a. Pupils
b. Corneas
c. Rods
d. Cones
Answer: c
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Martin and Lewis are both age 3, and the main benefit they get out of being friends with each other is __________.
A. the enjoyment of carrying out shared activities B. trust, support, and pursuing shared interests C. the give-and-take of competing with each other in games D. the intellectual stimulation of conversation and learning activities
Existential therapists believe that psychological problems originate from:
a. irrational beliefs and negative thoughts b. the anxieties created by personal choices c. unconscious impulses and memories d. discrepancies between an individual's self-concept and his or her everyday experiences
According to Gordon Allport, if a majority of people in the United States show the trait of competitiveness, then, for Americans, this trait would be considered a __________ trait
a. common b. cardinal c. secondary d. source
For natural selection to generate evolutionary change in a population ____.
A. there need not be any differences in the traits of individuals in that population B. the change in gene frequencies must help the species in the long run C. the differences must have a hereditary basis D. the change in gene frequencies will probably be harmful to the species