How do the number of rods compare to the number of cones?
a) Rods outnumber cones by about 20 to 1.
b) There are equal numbers of rods and cones in each eye.
c) These receptors are so tiny that it is virtually impossible to count them.
d) There are about 10 times more cones, a fact that reflects the importance of color to humans.
ANS: a
Psychology
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A) Joanna, who is hungry B) Tony, who wants to kiss Joanna C) Arnold, who is thirsty D) Hillary, who needs an "A" in psychology to graduate
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