Compare and contrast nitrogen and phosphorus cycles

When the volume and number of particles of a gas are constant which of the following is also constant

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 ?

What is the most important factor in determining climates.