Science crossword

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Across
  1. 2. an object that connects a circuit and electricity flows through it
  2. 4. a liquid that is very bad for health, like drugs
  3. 6. a substance that makes you sick and have diseases
  4. 8. a type of animal that has scales
  5. 9. they can live in water and on land
  6. 10. a substance that heals you from illness
  7. 12. an object that contains tungsten
  8. 15. a feature that mammals have inside them
  9. 16. it powers things when electricity flows through it
  10. 17. a type of animal that can swim
  11. 19. an object that makes noise when electricity goes through it
Down
  1. 1. another word for a battery
  2. 3. an animal with a backbone
  3. 5. another word for a child
  4. 7. an object that stops and starts the flow of electricity
  5. 11. a molecule that plants get from the soil
  6. 13. a type of animal that has feathers
  7. 14. an object that provides electricity to a circuit
  8. 16. a type of animal that gives birth to live young
  9. 18. an animal with no backbone