Renewable resources in the ocean can be drastically reduced by

Answer: Overexploitation

Explanation:

Renewable resources in the ocean can be reduced drastically due to overexploitation. Many aquatic species are at an verge of extinction due to overharvesting for commercial purpose. The seaweeds and other aquatic plant species are also overharvested. Also many coral reefs have been destroyed to obtain the chemical components for commercial purpose.