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Mini-Thresholds of Life

Mini-Thresholds of Life

Travel through time in a rowboat to consider some of the "mini-thresholds" in the development of life on Earth.

Key Ideas

As this video progresses, key ideas will be introduced to invoke discussion.

Key Ideas

Think about the following questions as you watch the video


  1. 01:12 What makes the emergence of photosynthesizing cells a mini-threshold?
  2. 01:58 What makes the emergence of eukaryotes a mini-threshold?
  3. 03:00 What makes the emergence of multicelled organisms a mini-threshold?
  4. 03:37 What makes the emergence of brains a mini-threshold?
  5. 04:13 What makes the move of sea creatures to land a mini-threshold?
  6. 05:03 What makes the emergence of mammals a mini-threshold?