An organ that produces secretions called hormones is known as a :
A. chemical
B. gland
C. hormone
D. duct
Select your answer:
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Biology › ViewWhich is an example of a learned characteristic?
A. Color of a dog’s fur
B. A mouse successfully running a maze
C. Color-blindness
D. Blinking your eyes several times a minute
BTEC Biological Approach Revise › View
5-HIAA (a serotonin related chemical) is
A. significantly lower in violent criminals
B. significantly higher in violent criminasl
C. Not present in violent criminals
D. has nothing to do with aggression