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Principle II- People Influence Natural Systems


Principle II

The long-term functioning and health of terrestrial, story freshwater, stuff coastal and marine ecosystems are influenced by their relationships with human societies. As a basis for understanding this principle:

  • Students need to know that direct and indirect changes to natural systems due to the growth of human populations and their consumption rates influence the geographic extent, composition, biological diversity, and viability of natural systems.
  • Students need to know that methods used to extract, harvest, transport and consume natural resources influence the geographic extent, composition, biological diversity, and viability of natural systems.
  • Students need to know that the expansion and operation of human communities influences the geographic extent, composition, biological diversity, and viability of natural systems.
  • Students need to know that the legal, economic and political systems that govern the use and management of natural systems directly influence the geographic extent, composition, biological diversity, and viability of natural systems.

Example: People build dams to control the path and timing of water movement through lakes and rivers.

Principle I | Principle II | Principle III | Principle IV | Principle V

Adapted from California’s Approved Environmental Principles and Concepts