8.3 How Do Living Things Change Over Time?

8.3 How Do Living Things Change Over Time?

This module is organized around three clusters of ideas: variation within and between species as a result of natural selection, the effects of natural selection over geologic time periods, and the geologic processes that have affected Earth throughout Earth’s history. These important ideas, from different fields of science, provide data that scientists have assembled as evidence of how change over time has occurred. The module focuses on developing models in both life and Earth sciences, and applying them consistently. The application of these models, throughout history, elucidates the story of evolution. The module concludes with a look at human intervention in population change in the form of selective breeding and genetic modification of plants and animals, which some students will likely choose to carry over into Module 8.4 projects.

 

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