Answer:
Carboxyl group, amino group, side chain
Explanation:
All of them except d. But then again it depends on who you are and what you think about what a purpose is. You need all of the other choices to have something to think about what purpose really means.
Formation of continental crust
Answer: Smooth muscle
Explanation:
I got it wrong on usatestprep and when it showed me the answer key, smooth muscle was the correct answer.
Answer:
Sugar,coffee powder, powdered drink mixes,bouillon cubes, corn starch,flour,cornmeal food coloring.
Explanation: