Final answer:
Commercial fishing to provide food for humans will have the greatest negative impact on the balance of organisms within an ocean ecosystem.
Step-by-step explanation:
Commercial fishing to provide food for humans will have the greatest negative impact on the balance of organisms within an ocean ecosystem. Commercial fishing involves large-scale removal of fish and other species, which can lead to overfishing and disrupt the food chain within the ecosystem. When certain species are overfished, it can result in population declines or even extinction, affecting the balance of the ecosystem.
Learn more about negative impact of commercial fishing on ocean ecosystem balance