The Variety of Resources on Earth (Set 3)

  • Please choose the best answer for each question.
    • 1. What is the percentage of the Earth’s surface that is covered by water?
      • A) 30%
      • B) 50%
      • C) 70%
      • D) 90%
    • 2. Water is needed for
      • A) Building materials and furniture
      • B) Respiration in living organisms
      • C) The process of decomposition
      • D) Transporting nutrients and oxygen in animals
    • 3. Which of the following processes requires carbon dioxide from the air?
      • A) Combustion
      • B) Photosynthesis
      • C) Respiration
      • D) Decay
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