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How to play Crossword Puzzle?
  • Click on an across or down clue.
  • Type in the answer on puzzle.
  • Background turns green on correct answer.
  • Continue until the puzzle is solved.
  • Clicking "hint" reveals a letter without awarding points.
  • Clicking "word" reveals entire word without awarding points.
  • Fill more answers in less time for higher score.
Energy flow and ecosystems
Crossword Hints
  1. main source of energy for most ecosystems
  2. use energy from the sun to make their own food
  3. Examples of decomposers are fungi and this organism
  4. organisms that can make or produce their own food
  5. animals that eat only plants
  6. animals that eat only animals
  7. animals that eat plants and animals
  8. food chains always start with this kind of organism
  9. break down dead organisms and return nutrients to the soil
  10. If the amount of grass decreased, the number of herbivores would do this
  11. If the number of herbivores increased, the amount of grass or producers would do this