Oceans: Plankton

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Across
  1. 2. Plankton are ______. We usually can't see them!
  2. 5. Zooplankton eat ________.
  3. 7. Plankton are carried by ______and_____.
  4. 9. Animal-like plankton that eat phytoplankton
  5. 10. A large animal that feasts on plankton
Down
  1. 1. Plant-like plankton that use photosynthesis to make their food
  2. 3. Phytoplankton release _____ through photosynthesis.
  3. 4. Zooplankton drift deeper during the day to avoid ______.
  4. 6. To make oxygen, phytoplankton need to take in _______.
  5. 8. Phytoplankton live at the surface of the ocean because they need _______.