Where's the periodic table?
It is the primary site for nutrient absorption into the blood stream after being digested into small molecules with enzymes.
“Magnets are surrounded by an invisible magnetic field that is made by the movement of electrons, the subatomic particles that circle the nucleus of an atom”
“Every magnet has both a north and a south pole. When you place the north pole of one magnet near the south pole of another magnet, they are attracted to one another. When you place like poles of two magnets near each other (north to north or south to south), they will repel each other.”
Answer : D. Gravitational Potential
Gravitational Potential energy =mgh