Week 3 DQ 1 Pretend that you have just met someone who has never heard of “natural selection.”�  Explain to him/her how natural selection works. Use one particular type of organism as an example to illustrate your explanation.   Week 3 DQ 2 What is a species?  How do new species form?   Week 3 DQ 3 What is biodiversity, and why is it important?

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