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lizzyjohnson16 lizzyjohnson16
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Posts: 306
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6 years ago
An imbalance of which type of naturally occurring substances in the brain is thought to be responsible for depression?
 
  a. Enzymes
  b. Receptors
  c. Neurotransmitters
  d. Endocrine hormones
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wrote...
6 years ago
ANS: C
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