NATURE

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Across
  1. 5. community of living organisms
  2. 7. all living and non-living things in the natural world
  3. 9. last name of a former US president that supported conservation
  4. 10. what humans breathe
Down
  1. 1. study of past human interactions
  2. 2. visible features of an area
  3. 3. first component of a food chain
  4. 4. name of the most famous national park in the US
  5. 6. study of humans, plants and animals
  6. 8. last name of the author that wrote about transcendentalism and romanticism