Read the passage below carefully, and then choose the best answer:
Say Sayonara to Sushi?
There are few meals as nutritious as a plate of fresh fish. Whether eaten steamed or raw, fish provides our bodies with healthy fats and it tastes great, too. Yet for years, the fishing industry has practised overfishing, depleting the world’s oceans. It has been estimated that 85 percent of stocks worldwide have been diminished to a dangerous level. Statistics show that the average person consumes more than four times as much fish as someone from the 1950s. As the world’s population grows and more people are able to afford pricier foods, the problem will likely get worse. In truth, knowledge of the shortage of fish is not something new. Since the late 1980s, despite increased technology and a greater demand for fish, the total global catch has not increased. Eager to make a buck, some fishermen have resorted to illegal tactics to catch more fish and increase their income. They will violate regulations by fishing in waters that are supposed to be off-limits. To make matters worse, they often use mile-long drift nets which trap and kill large numbers of unwanted marine life for no reason at all. These practices only serve to destroy fishes’ habitats and speed up the rate of population decline. As a result of dwindling fish supplies, many nations are turning to farmed fish. About half of the fish sold today is derived from this practice. Supporters point out its efficiency and that it is more feasible to support populations in this manner than with land animals. However, there are still many hurdles to overcome. Many of the current farm fisheries are poorly run by their owners. Poor practices can lead to marine pollution, as waters can be filled with fish manure and extra feed that is not consumed. Some farmed fish have limited space, which causes disease. This in turn can lead to health issues for the people who consume the fish. Still, some regard fish farming as the way of the future. They suggest that with a few modifications, it would be possible to meet the growing demand for fish. Others have suggested more drastic measures, such as placing a ten-year ban on capturing some species, to deal with the shortage. These people argue that a decade would provide sufficient time for the fish population to replenish itself hack to healthy levels. Hopefully, nations can come together and agree upon an effective course of action before it is too late.
2. The amount of fish caught annually has __________ over the past two decades

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