Final answer:
As a scuba diver goes deeper into the water, increased pressure affects the human body in multiple ways. These include equalization of air pockets, changes in buoyancy, and the impact on the duration of underwater stays.
Step-by-step explanation:
As a scuba diver descends into deeper water, the pressure increases. This increased pressure affects the human body in several ways. A diver must undergo equalization to prevent air pockets in the ears and lungs from compressing or expanding too quickly, which could result in injury. Additionally, the pressure impacts a diver's buoyancy, as the air in their buoyancy compensator (BCD) expands or compresses with changes in pressure. Finally, the pressure affects the amount of time a diver can stay underwater before needing to ascend, as the compressed air is used up faster at greater depths.