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6. Which of the following is not a disadvantage of Hydroponics?

  • Growers need to be skilled and trained
  • The plants need supporting
  • Mineral levels can be controlled
  • It can be expensive to set up and run

7. ______ means using living things instead of chemicals to control a pest

  • Biological Control
  • Labour Intensive
  • Organic Farming
  • Pesticides
  • Hydroponics

8. Nitrogen is constantly recycled

  • True
  • False

9. How can water pollution be measured?

  • Neither
  • Both
  • Indirectly
  • Directly

10. Lichen Distribution indicates the amount of air pollution

  • True
  • False