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Biology, 01.04.2021 18:20 webbhlharryteach

1. Which layer is the oldest? Which layer is the youngest? How do you know? 2. What are some characteristics of the organisms in layers 1-6?
3. What are some characteristics of the organisms in layers 7-12?
4. Develop a theory as to how the organisms in this area changed over time.


1. Which layer is the oldest? Which layer is the youngest? How do you know?

2. What are some char

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