Diversity of the Coral Reef

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Across
  1. 3. The measure of the biomass that is present within an area.
  2. 5. The area of an ocean that receives enough light to sustain photosynthesis.
  3. 6. Organisms that are fixed to their environment.
Down
  1. 1. corals that are reef-building and contain zooxanthellae.
  2. 2. Animals without a spine.
  3. 4. The variety of different life forms that define a community or ecosystem.