Question: In a 2002 study published in Journal of Experimental Biology, researchers sought to determine how much energy pelicans expended solely to incubate their eggs. To this end, they measured the metabolic rate of pelicans while incubating their eggs using two different techniques: direct calorimetry and respirometry. How can these measurements be used to estimate the energy expended solely to incubate their eggs.Incubation Energy = MR via Direct Calorimetry MR via Respirometry Incubation Energy = MR via Direct Calorimetry - MR via Respirometry Incubation Energy = MR via Respirometry - MR via Direct Calorimetry. Need Assignment Help?