What type of world was it?

Unit 3: Bacteria
Lesson 4 of 4

Objective: Students will compare and contrast the Earth's early environment with the Earth's current environment. Students will explore clues from the fossil record to determine how scientists think life started on Earth.

Big Idea: Life on Earth is the cosmic equivalent of what happens when you don't store things in a cool, dry place. How did life arise on a seemingly lifeless planet?

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Subject(s):
fossil record (Ancient History), extinction, Science, fossil record (Evolution), bacteria, Engaging in argument from evidence , Obtaining and Communicating Information
  115 minutes
stromatolites hoyt mcr1
 
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