Answer:stomach acids i presume such as Gastric acid, or what most people call stomach acid, is vital in the proper breaking down of your food. It's composed of multiple compounds and enzymes, which form the fiery cocktail of hydrochloric acid (HCI), potassium chloride and sodium chloride.
Explanation:
THE ELECTRON TRANSPORT CHAIN is responsible for releasing energy that is used to pump hydrogen ion. The energy which is released in form of electrons are passed through the electron transport chain and used to pump protons into the thylakoid compartment of the plant cell.
Co-ordinate covalent bonding
Sweat (or sebum) and bacteria
