Harmful bacteria not remover by ealier steps in water purification are finally destroyed during what?

The crust of earth may a- continets and ocean floors. b-continents only. c-layers of sedimentary rocks and continents. d-all of the above

In the lab, ammonia was mixed with water to form ammonium hydroxide. what is/are the reactant(s)? o water and ammonia o ammonia o ammonium hydroxide need

Is powdered sports drink ionic or covalent ? 10pts !