Chapter 5.1 The Open Ocean Key Words

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Across
  1. 4. the zone of the open ocean between 4000 and 6000m deep with near freezing temperatures and intense pressure which receives no sunlight. Also known as the aphotic zone.
  2. 5. smaller and less deep bodies of seawater that are partially enclosed by land; they are found where the ocean and land meet
  3. 7. a natural environment that absorbs carbon dioxide from the atmosphere faster than it releases it.
  4. 9. the zone of the open ocean between 0 and 200m deep which receives enough sunlight for photosynthesis. Also known as the photic zone
  5. 10. the combination of all major oceans into one large, interconnected body of water that encircles the world’s continents
Down
  1. 1. the zone of the open ocean between 200 and 1000m deep which receives very little sunlight. Also known as the disphotic or twilight zone.
  2. 2. the lowest depth region in any body of water including the surface of the substrate.
  3. 3. the community of organisms found in the benthic zone.
  4. 6. benefits people obtain from ecosystem, including food, flood regulation, climate control and water purification
  5. 8. a continuous mass of seawater on the Earth’s surface, its boundaries formed by continental land masses, ridges on the ocean floor or the equator