Questions asked by Alison

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• What is the direction of revolution of earth around the sun?I wanna know that ....is it clockwise or anticlockwise ?
  
• Write 2 experiments that proves that oxygen is used up in respiration.Explain in detail how does this done and what are the things used?
  
• If x=3+2√2,find the value of( x to the power 3)-1/(x to the power 3).And plz mention why (4√2) to the power 3 =128√2?
  
• If x=2-√3,then What is the value of x cube - 1/x cube?