1. (30 points) Short answer problems (no calculations needed): (a) (15/30 points) What are two general objectives of employing chemical oxidation processes during water and wastewater treatment, and why would we choose chemical oxidation to achieve them? Now, following up that question, provide at least two examples of specific contaminants or contaminant classes that we may target with chemical oxidation processes. (b) (15/30 points) A key concern associated with increases in pco2 levels in the atmosphere due to anthropogenic CO2 emissions is ocean acidification and the impacts it may have on mollusks, corals, and other marine organisms that utilize CaCO3(s) in building their shells and/or (exo)skeletons. Using your knowledge of carbonate system chemistry in open systems in contact with CO2 and CaCO3(s), provide a brief description of how higher pco2 levels are expected to impact such organisms, and a few sentences explaining why