Question

List three physical factors that are used to divide the ocean into marine life zones. How does each factor influence the abundance and distribution of marine life?

Answer 1

Three physical factors that divide the ocean into marine life zones are light availability, temperature, and depth. These factors influence the abundance and distribution of marine life.

Step-by-step explanation:

Three physical factors that are used to divide the ocean into marine life zones are:

1. Light availability: Light is an essential factor that influences the abundance and distribution of marine life. In the photic zone, where light can penetrate, photosynthetic organisms like phytoplankton thrive, supporting the base of the food chain. In the aphotic zone, where light is absent, organisms rely on other sources of energy, such as chemosynthesis.
2. Temperature: Temperature affects the metabolic rates and physiological processes of marine organisms. Different species have specific temperature ranges within which they can survive and reproduce. The distribution of marine life is influenced by the temperature variations in different zones of the ocean.
3. Depth: The depth of the ocean determines the water pressure, availability of nutrients, and other physical factors that impact marine life. Deeper zones typically have higher pressure, less light, and fewer nutrients, resulting in different species compositions and adaptations.

Each of these factors plays a crucial role in shaping the abundance and distribution of marine life in their respective zones.