The correct answer is: d) All of the above
Overfishing is a major threat to the marine ecosystem. It can lead to a decline in fish populations, biodiversity loss, and economic hardship for fisherfolk.
A decline in fish populations can have a number of negative consequences. It can lead to a decrease in the availability of fish for food, which can have a negative impact on human health. It can also lead to a decrease in the number of fish that are available for commercial fishing, which can have a negative impact on the fishing industry.
Biodiversity loss is the loss of variety of life on Earth. Overfishing can lead to biodiversity loss by reducing the number of different species of fish in the ocean. This can have a number of negative consequences, such as disrupting the food web and making the ocean more vulnerable to changes in the environment.
Economic hardship for fisherfolk is another negative consequence of overfishing. When fish populations decline, it can make it difficult for fisherfolk to make a living. This can lead to poverty, hunger, and social unrest.
Overfishing is a serious problem that needs to be addressed. There are a number of things that can be done to reduce overfishing, such as setting limits on the number of fish that can be caught, protecting marine habitats, and promoting sustainable fishing practices.