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Principle III- Natural Systems Change in Ways that People Benefit from and can Influence


Principle III

Natural systems proceed through cycles that humans depend upon, online benefit from and can alter. As a basis for understanding this principle:

  • Students need to know that natural systems proceed through cycles and processes that are required for their functioning.
  • Students need to know that human practices depend upon and benefit from the cycles and processes that operate within natural systems.
  • Students need to know that human practices can alter the cycles and processes that operate within natural systems.

Example: Agricultural production depends on the nutrients deposited by rivers when water floods farmlands.

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

Adapted from California’s Approved Environmental Principles and Concepts