Sharks - 2nd/3rd

Next Generation Science Standards:

4-LS1-1 (From Molecules to Organisms: Structures and Processes)
"Construct an argument that plants and animals have internal and external structures that function to support survival, growth, behavior, and reproduction."

3-LS4-3 (Biological Evolution: Unity and Diversity)
"Construct an argument with evidence that in a particular habitat some organisms survive well, some survive less well, and some cannot survive at all."