science

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Across
  1. 2. provides electrical current to the circuit
  2. 5. doesn't allow electric current to pass
  3. 7. plants make their food by the process
  4. 8. habitat of aquatic organisms
Down
  1. 1. made up of calcium
  2. 3. habitat of plants, trees and human
  3. 4. organisms live
  4. 6. allow electrical current to pass