In balancing a redox reaction using half reactions what must be true concerning the number of electrons lost in the oxidation half reaction compared to the number of electrons gained in the reduction half reaction

1) describe the physical layout of the ocean floor ? 2) explain how the dumbo octopus swims differently than other octopus species and why this would be an advantage in the aphonic zone . 3) why are the types of organisms that live at each underwater hot vent so dramatically different ?