Answers edited by Austin

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• How did the earth form?
  
• Why is aerobic respiration important to us?
  
• What is one most important advantage of sexual reproduction?
  
• How do ribosomes synthesize proteins?
  
• What are the reproductive organs that produce gametes in both males and females called?
  
• How does carbon dioxide increase the Earth's temperature?
  
• Why do temperatures increase in the stratosphere?
  
• Would the wood of a rotting log be considered an ecosystem?