Final answer:
Overharvesting, destructive fishing methods, and bycatch are the three industrialized fishing practices that have overexploited our oceans. Among these, overharvesting is the worst as it directly targets desired fish species, leading to their decline and potential extinction.
Step-by-step explanation:
The three industrialized fishing practices that have overexploited our oceans are overharvesting, destructive fishing methods, and bycatch. Overharvesting refers to the excessive removal of fish from the ocean, leading to population declines. Destructive fishing methods, such as bottom trawling and dynamite fishing, cause damage to the ocean floor and destroy habitats. Bycatch is the unintentional capture of non-target species, resulting in waste and further depletion of marine populations.
Out of these practices, the worst is overharvesting. This is because overharvesting directly targets the desired fish species, leading to their decline and potential extinction. It disrupts the balance of ecosystems and has far-reaching negative consequences, affecting not just the target species but also their predators and prey. Overharvesting is a significant threat to marine biodiversity and sustainable fishing practices.