The answer to this question is B. i am 110% positive.
Hello!
Barack Obama has had many professions and he's quite educated!
Education:
Harvard Law School, Columbia University, Harvard University, Occidental College, Columbia College.
Professions/Jobs:
Lawyer, Politician, Law Professor, Author.
Explanation:
When an aqueous solution freezes, the unfrozen solution becomes denser. That's because some of the water has been removed as ice. However, the solutes remain dissolved in a solution with a smaller liquid volume. The concentration of the solution increases, so the density increases.
You would use<span> a correlation spectrometer.</span>
Peristalsis is the movement of particles through the digestive tract
