Question

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

Explanation:

Light penetration is crucial as it affects photosynthesis (for primary producers like phytoplankton) and thus the food web. Different ocean zones (e.g., euphotic, dysphotic, aphotic) have varying light levels, directly influencing which marine organisms can survive there. Boat vicinity is a transient and local - scale human - related factor not a fundamental ecological determinant. Seabed age and color have minimal direct impact on the distribution of marine life compared to light which is a key abiotic factor affecting energy availability in the ecosystem.

Answer:

B. light penetration