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Oceans: The Last Frontier
Objectives
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 After reading, studying, and discussing Chapter 9, you should be able to:
- Describe the extent and boundaries of the world ocean.
- Discuss the chemical composition of ocean water.
- Explain the ocean's layered temperature and salinity structures.
- Describe the major features of active and passive continental margins.
- List the types of sea floor sediments.
- Describe how ocean floor sediments relate to climate changes.
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