What is anhedonia in schizophrenic patients
A. strong feelings of ambivalence
B. a lack of emotional response
C. the inability to experience pleasure
D. severe speech disturbance
Ans: C. the inability to experience pleasure
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Within the peppered moth species, which trend in wing color has been observed over the past 250 years?
a. Light-dark b. Dark-light c. Light-dark-light d. Dark-light-dark e. Dark-light-dark-light
The changing pattern of wing color in the peppered moth is evidence for the advantage of
a. genetic diversity in an unchanging environment. b. genetic diversity in a changing environment. c. environmental diversity in the absence of genetic diversity. d. environmental diversity in the presence of genetic diversity. e. unchanging environments and the absence of genetic diversity.