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Questions and Answers

What is the source of energy for all living beings?

  • Water
  • Air
  • Sunlight
  • Food (correct)

    • Why do some engines require fuel like petrol and diesel?

  • To produce smoke for environmental reasons
  • To release oxygen for combustion
  • To provide energy for their working (correct)
  • To make loud noises for safety purposes

    • What do all living beings and machines need?

  • Water
  • Energy (correct)
  • Fuel
  • Electricity

    • What is the term used for the activities living beings have to perform to survive?

    <p>Life processes</p> Signup and view all the answers

    What is the difference in the way the term 'work' is used in day-to-day life and in science?

    <p>Day-to-day life uses 'work' for physical labor, while science uses it in a broader sense</p> Signup and view all the answers

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