Question

sources of oxygen in the open sea include

multiple choice

the atmosphere

photosynthesis

respiration and decay

the atmosphere and photosynthesis

photosynthesis and respiration and decay

Explanation:

Oxygen in the open - sea comes from the atmosphere as oxygen can dissolve into the water from the air above. Also, photosynthesis by marine plants and phytoplankton produces oxygen. Respiration and decay consume oxygen rather than produce it.

Answer:

D. the atmosphere and photosynthesis