Answers created by RosieCandy

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• How are sunspots formed? What are they?
  
• There are billions of galaxies in the universe. How are they classified?
  
• Why isn't the universe uniform and symmetric?
  
• How many solar systems are there in the universe?
  
• What are the outer planets?
  
• Where are some of the best examples of loess?
  
• What are some advantages and disadvantages of hydropower?
  
• What are the major layers of the atmosphere?
  
• What is insolation?