-
:
- 5-8:
- Unifying concepts and processes:
- Systems, order, and organization
- D - Earth and space science:
- Structure of the earth system
- 9-12:
- Unifying concepts and processes:
- Systems, order, and organization
- D - Earth and space science:
-
:
- Physical systems:
- The characteristics and spatial distribution of ecosystems on Earth's surface
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