Question

2 what are the 4 key factors that determine the types and numbers of organisms found at various depths in the ocean? 1. _ 2. _ 3. _ 4. _

Explanation:

Ocean - dwelling organisms' types and numbers at different depths are influenced by light availability for photosynthesis, temperature which affects metabolic rates, pressure that impacts physical structures, and nutrient availability for growth and energy.

Answer:

1. Light
2. Temperature
3. Pressure
4. Nutrients