Hi! I have been working on ABG practice problems and think I have it all down... except these three questions...Can anyone help me with these/ explain? Thanks so much for your help!! What is the mechanism by which CO2 is formed in the human body? a) By-product of plasma protein degradation b) By-product of inadequate tissue perfusion c) By-product of normal metabolic processes d) By-product of insufficient hemoglobin The renal systen resolve respiratory induced acidosis by? a) Excretion of fewer hydrogen ions in the form of fixed acids b) Excretion of additional CO2 in the form of fixed acids c) Reabsorption of additional bicarbonate from urine filtration d) Reabsorption of additional hydrogen ions from urine filtration The source of atmospheric or barometric pressure is... a) Air currents in the atmosphere b) Electrical charges associated with ions in the atmosphere c) Chemical attraction of gas molecules for one another in the atmosphere d) Random movement and collision of gas molecues in the atmosphere