Final answer:
The physical conditions in marine environments, such as depth, temperature, and salinity, contribute to the differences in the global distribution of non-mineral resources like fish and shellfish.
Step-by-step explanation:
The physical conditions in marine environments, such as depth, temperature, and salinity, contribute to the differences in the global distribution of non-mineral resources like fish and shellfish. Different species have specific adaptations to the unique conditions found in each marine zone, which influences their geographical distribution. For example, coral reefs are found in warm and shallow waters, while estuaries provide nourishment and shelter for young marine life. Understanding these physical conditions helps explain why certain non-mineral resources are found in specific regions of the world.