biology crossword

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Across
  1. 2. speeds up chemical reactions
  2. 5. attraction between to alike molecules
  3. 6. the sum of all ecosystems on earth
  4. 8. nonliving factor in ecosystem
  5. 10. single cell
  6. 11. the smallest unit of an element
Down
  1. 1. were the enzyme acts
  2. 3. no exception found and explains but does not describe
  3. 4. measure of heat needed to raise temperature
  4. 6. describes a living thing or used to be
  5. 7. different organism's interacting in an Enviromint
  6. 9. basic unit of structure and function for all organisms