Answers edited by Christen J.

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• How is digestion achieved?
  
• Question #36a5e
  
• What are the similarities and differences between the circulatory and respiratory systems?
  
• In what parts of the heart do you find oxygenated blood and in what parts do you find deoxygenated blood?
  
• How did the Montgomery bus boycott strengthen the civil rights movement?
  
• How can the body lose heat?