Final answer:
Aquatic life forms at the bottom of the ocean receive oxygen through the process of convection, where heat and dissolved substances like oxygen are transferred via water movement.
Step-by-step explanation:
The process by which aquatic life forms at the bottom of the ocean get the oxygen they need to live is related to heat transfer by convection
Convection is the transfer of heat through the movement of fluids, and in the ocean, it involves the circulation of water due to differences in temperature and density. Warmer, less dense water rises while cooler, denser water sinks, creating a continuous flow that can distribute oxygen throughout the water column.