Plankton; a Vital Protist

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Across
  1. 4. scientific name for "diatoms"
  2. 6. when a plankton population swells
  3. 8. organism that can be seen under a microscope
  4. 10. process is completed by using chlorophyll and sunlight to produce energy
  5. 12. type of plankton that is a plant
Down
  1. 1. organism of cells within a nucleus
  2. 2. is the Greek word for drift
  3. 3. majority of the earth is covered in what?
  4. 5. organism that is not microscopic, but is considered to be plankton
  5. 7. type of plankton that is an animal
  6. 9. scientific name for "blue-green algae"
  7. 11. group of unicellular and some multicellular eukaryotes