Fundamental Principle Content

Learning Objectives

The ocean made Earth habitable

Secondary 

Core:

  • Most of the oxygen in the atmosphere originally came from the activities of photosynthetic organisms in the ocean. This accumulation of oxygen in Earth’s atmosphere was necessary for life to develop and be sustained on land.
  • The first life is thought to have started in the ocean. The earliest evidence of life is found in the ocean.


Middle School

Core:

  • Most of the oxygen in the atmosphere originally came from the activities of photosynthetic organisms in the ocean. This accumulation of oxygen in Earth’s atmosphere was necessary for life to develop and be sustained on land.
  • The first life is thought to have started in the ocean. The earliest evidence of life is found in the ocean

Elementary

    Core:

    • Most of the oxygen in the atmosphere originally came from the activities of photosynthetic organisms in the ocean. This accumulation of oxygen in Earth’s atmosphere was necessary for life to develop and be sustained on land.
    • The first life is thought to have started in the ocean. The earliest evidence of life is found in the ocean.


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