Big Idea: Evolution in Populations and Ecological Systems

Examine the Big Idea of Evolution at the organismal, population and ecological system levels.

The Big Idea is that the diversity and unity of life can be explained by the process of evolution.

The main themes to integrate throughout this Big Idea are:

  • The origin of living systems occurred by natural processes, and life continues to evolve within a changing environment.
  • Organisms can be linked by lines of descent from common ancestry.
  • Natural selection is a mechanism of evolution that accounts for adaptation.
  • Human activity can alter the course of evolution.