Answer is: C
Hopefully this helps you, have a nice day! :)
in addition to that; (it's pairs of 4 types of (c))
Answer:
they have in common is fats
Answer:Variation in traits can be caused by variation in protein molecules within individuals' cells. Protein molecules' structures affect their function and the way they connect to other molecules.
Explanation: ^^^ hope it helps :)
Cells create tissues which create organs which make up systems so i believe the answer is D i hope this helps :)