It is definitely not a primary source: this would be a book itself.
Now, is it a tertiary source? I don't think so: the author of the review should have read the book and should only be referring to this book in the review.
I think it's a secondary source.
Fruit flies and humans have very similar genetic structures.
I take biology 1 just not FLVS. whats Ur question?
The question is asking to answer the following questions and base on my further research and investigation, I would say that answer would be the following:
#1 D. Oceanic crust is thinner and less dense than continental crust.
#2 B. where an oceanic plate is moving toward a continental plate
#3 A. The seafloor is spreading.<span>
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