Answer:
D plants and algae that live near the surface
Explanation:
One of the main source of dissolved oxygen in the ocean is through the activities of plants and algae.
- Oxygen in the atmosphere can mix with the water and dissolve in it.
- Plants and algae releases oxygen a product of life activities.
- The oxygen becomes dissolved in water and contributes to the net dissolved oxygen in the ocean.
- These underwater plants and algae takes up carbon dioxide from the environment and releases oxygen as a by-product.
