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Text File  |  1992-09-03  |  429b  |  13 lines
  1. Blue-green algae are so called because a
  2. pigment called phycocyanin, which masks the
  3. green chlorophyll in most species. The cells
  4. of these algae are usually larger and more
  5. complex than bacterial cells, though they
  6. never have flagella of any sort and often 
  7. grow in long chains or filaments. They 
  8. photosynthesize like higher plants to extract
  9. energy from the sun, during which they 
  10. release oxygen.
  11.  
  12. Subject by: Graham Hamilton
  13.