General Knowledge & Science Questions

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Across
  1. 3. What part of the cell controls all activities?
  2. 8. What is the main component of natural gas?
  3. 9. What is the main gas responsible for global warming?
  4. 10. What do we call a change in position of an object?
Down
  1. 1. What part of the Earth’s atmosphere contains the ozone layer?
  2. 2. What is the process of removing waste from the body called?
  3. 4. Which gas is most abundant in the Earth’s atmosphere?
  4. 5. What part of the plant transports food?
  5. 6. What are organisms that live on or inside another organism called?
  6. 7. Which organ in the human body filters blood?