Intertidal life

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Across
  1. 5. area between low tide and extreme low tide, rarely exposed
  2. 8. occurs when the moon is parallel to the sun
  3. 10. the attractive force between any two objects with mass
  4. 11. area between the high tide and low tide
  5. 12. tides occurs when the moon is perpendicular to the sun
Down
  1. 1. taking natural resources like plants or animals at a rate faster than the population can naturally replace itself
  2. 2. one organism kills and consumes another for nutrition
  3. 3. interactions between organisms and species to get a limited resource
  4. 4. State of extreme dryness
  5. 6. Area that is submerged only at spring tides
  6. 7. area above the high-tide line that is rarely submerged but is regularly hit by waves and sea spray
  7. 9. Rising and falling of the sea