Final answer:
The oceanic zone, specifically the 1. abyssal zone, is known for its low temperature, little or no light, and great pressure. It lacks photosynthetic organisms but hosts chemosynthetic bacteria as the base of the food chain.
Step-by-step explanation:
The oceanic zone is known for having low temperature, little or no light, and great pressure. It is characterized by depths of 4000 m or greater and is referred to as the 1. abyssal zone.
The abyssal zone has very high pressure, very low or no oxygen content, and high nutrient content. It does not have photosynthetic organisms, but chemosynthetic bacteria use minerals emitted from hydrothermal vents as an energy source and serve as the base of the food chain.