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Lesson summary for:
Evo in the news: Oxygen as an evolutionary constraint

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Overview:
This news brief from November 2009 focuses on how changes in atmospheric chemistry may have factored into the evolution of life on Earth—specifically, life’s quadrillion-fold growth spurt from microscopic bacteria to organisms the size of the blue whale.

Author/Source:
UC Museum of Paleontology

Grade level:
13-16

Time:
30 minutes

Teaching tips:
This article includes a set of discussion and extension questions for use in class, as well as a video podcast. It also includes hints about related lessons that might be used in conjunction with this one. Get more tips for using Evo in the News articles in your classroom.

Concepts:
Correspondence to the Next Generation Science Standards is indicated in parentheses after each relevant concept. See our conceptual framework for details.

  • Biological evolution accounts for diversity over long periods of time.

  • Geological change and biological evolution are linked.

  • The patterns of life’s diversity through time provide evidence of evolution.

  • The fossil record provides evidence for evolution.

  • A hallmark of science is exposing ideas to testing.

  • Our knowledge of the evolution of living things is always being refined as we gather more evidence.

  • Our understanding of life through time is based upon multiple lines of evidence.

Teacher background:

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