Chloride and sodium, I believe. Chloride and Sodium are believed to be salty, and this concentration makes up 90% of all dissolved ions in the ocean.
The answer is C The enzyme lowers the energy of activation for the reaction. The amount of free energy produced in the reaction increased with an enzyme. Energy of
Activation
Free energy
The answer would be D, Schwann cells, because they are a part of the myelin sheath (which covers the neurons). c:
