The independent variable is the one that is
a. free to vary.
b. measured.
c. manipulated.
d. the outcome variable.
Question 2
Darwin's evolutionary theory influenced the development of the field of personality psychology through
A) its focus on how a species on an isolated island may differ from its mainland counterpart.
B) its focus on divine intervention as a mechanism of population change.
C) the idea that people are subject to the laws of nature, like other animals.
D) the introduction of fossil evidence as a source of data.
E) the idea that extinct populations can provide important data.
Mount Logan, Yukon. Environmental conditions and organisms vary greatly from low to high elevations
Controlled Experiments Manipulate a Variable
Free Energy Enzymes
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First-order sensory neuron with free nerve endings