science time

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Across
  1. 2. the main star in our solar system
  2. 5. the first dog in space
  3. 6. an animal that eats only plants
  4. 7. the smallest part of an atom
Down
  1. 1. an animal that eats only meat
  2. 2. electricity that jumps beetween objects
  3. 3. the outer shell of electrons in an atom
  4. 4. the amount of power supplied by a source