Answers edited by Reyna A.

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• What are the receiving chambers of the heart and what are the discharging chambers?
  
• Question #5fa2e
  
• When can a price ceiling be beneficial?
  
• What is Anaxagoras's Universe?
  
• How can price ceilings be used to regulate a natural monopoly?
  
• =Who developed the about the power of the part of the mind called the unconscious?
  
• What are the main hormones in human body and what is the importance of these hormones in the body?
  
• Question #f6b0f
  
• How did the Internet help to strengthen democracy?