Does the presence of mitochondrial DNA suggest that organisms share many conserved core processes that evolved and are widely distributed among organisms today?

a=c and then d= c because of the band so you get ac/dc and you add them together you get sound waves

in the initial assessment of breathing, signs of respiratory distress must be noted (if present), such as the use of accessory muscles for breathing, abdominal breathing and grunting respiration. next, respiratory rate must be observed. increasing breathing rate may be a sign of sickness.