Answers created by Thomas U.

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• Is there evidence for water on the moon?
  
• Approximately how much of the total volume of the atmosphere is oxygen?
  
• What percent of earth's history did dinosaurs live?
  
• What organisms are the producers, first order consumers, second order consumers, and third order consumers in an ecosystem?
  
• How does the law of crosscutting relationships help scientists determine the relative age of rocks?
  
• Is lava produced at a continent-oceanic convergent boundary, if so how?
  
• In what type of rock do fossils usually form in?
  
• How do you find the integral of `f(x)=e^(2x)sin3x` using integration by parts?
  
• A mass of 0.2kg is attached to a spring of negligible mass. If the mass executes simple harmonic motion with a period of .5 s, what will be the spring constant?
  
• How does air pollution affect global climate change?
  
• Why are igneous rocks called primary rocks?
  
• How does a topographic map show terrain features?
  
• What is the conjugate base of NH4+?
  
• What is the pH of a solution that has a hydronium ion concentration of `1.00*10^-10` M?
  
• How do you find the Maclaurin series of `f(x)=ln(1+x^2)` ?
  
• How can volcanic eruptions change the surface of the earth?