Question

what is the primary factor that determines the dependence of underwater organisms on ocean water substances? the depth of the ocean the amount of sunlight in the ocean the substances dissolved in ocean water the temperature of ocean water

Explanation:

Underwater organisms' dependence on ocean water substances is mainly determined by the substances dissolved in ocean water. These dissolved substances are crucial for their survival, growth, and metabolic processes. For example, dissolved oxygen is necessary for respiration, and dissolved nutrients like nitrates and phosphates are essential for photosynthesis (in phytoplankton) and overall biological functions. The depth of the ocean, amount of sunlight, and temperature of ocean water can influence the availability and distribution of these dissolved substances to some extent, but the primary factor directly related to the dependence is the substances themselves.

Answer:

The substances dissolved in ocean water