Question

7 how much of the world’s fish stocks have declined do to unsustainable fishing?

Explanation:

To determine the proportion of the world's fish stocks that have declined due to unsustainable fishing, we refer to scientific research and reports (such as those from the Food and Agriculture Organization of the United Nations - FAO). According to available data, about one - third (or more precisely, around 34% in some reports) of the world's fish stocks are overfished (which is a result of unsustainable fishing), and the overall decline in fish stocks due to unsustainable fishing (including overfishing, illegal fishing, etc.) has led to a significant portion of fish stocks being in a state of decline. A commonly cited figure is that approximately one - third (or 30 - 34% range) of the world's fish stocks have declined due to unsustainable fishing practices.

Answer:

Approximately one - third (or around 30 - 34%) of the world's fish stocks have declined due to unsustainable fishing. (Note: The exact percentage may vary slightly depending on the source and the time of the study, but a widely recognized estimate is around one - third or 34% of fish stocks are overfished, which is a major part of the decline due to unsustainable fishing.)