Questions asked by Pop Quiz Whiz

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• Why is there so much ozone?
  
• What are continued fractions for?
  
• What do #100.# and #50.# mean?
  
• 3 types of photosynthesis?
  
• How does #CO_2# cause ocean acidification?
  
• What is the 'grad' setting on some calculators?
  
• Why do some answers have several edits by the same person?
  
• What is the reaction between ammonia and bleach that makes it unsafe to mix the two?