If you start with 5 molecules of o2 in the reaction 2mg + o2 2 mgo, how much mg will you need

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 ?