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Across
  1. 2. – Vascular tissue in plants that transports water.
  2. 3. – The science of classifying organisms.
  3. 4. – A close relationship between two different species.
  4. 6. – Related to feeding and nutrition in an ecosystem.
Down
  1. 1. – Animals with a backbone.
  2. 5. – Storage organelles in cells.