Using Earth's Resources

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Across
  1. 2. Water that is held underground
  2. 4. Taxes on importor exports
  3. 6. Insufficient for deman
  4. 7. Buying things from other countries
  5. 9. Watering crops to help them grow
  6. 10. Necessity to have
Down
  1. 1. The desire to posses something
  2. 3. Growing Plants in water
  3. 5. Natural Underground rock formations which holds water
  4. 8. Another word for salty