Question

which of the following is a key factor in determining the distribution of marine life in different ocean zones? boat vicinity seabed color seabed age light penetration

Explanation:

To determine the key factor for marine life distribution in ocean zones, we analyze each option:

• "Boat vicinity" is a human - related, temporary factor and not a fundamental ecological factor for marine life distribution.
• "Seabed color" has no direct impact on the survival, growth, and distribution of marine organisms.
• "Seabed age" is not a key ecological factor that influences where marine life can live and thrive.
• "Light penetration" is crucial. Different marine organisms have different light requirements for photosynthesis (in the case of phytoplankton), vision, and habitat. For example, photosynthetic organisms need sufficient light, and the depth of light penetration determines the zones where they can live, which in turn affects the entire food web and the distribution of other marine life.

Answer:

D. light penetration (assuming the options are labeled A - D as boat vicinity, seabed color, seabed age, light penetration respectively)