6. Sustainable fishing would include which of the following: a. Allowing fishing

Question

6. Sustainable fishing would include which of the following: a. Allowing fishing that "fully exploits" a fish population. b. Fishing at or below the maximum sustainable yield of a fish population. c. Fishing that removed fish faster than they are replaced in one area as long as there is a healthy population elsewhere. d. A and B e. A, B and C 7. Which of these is true about aquaculture? a. It has been around for centuries. b. It involves intentionally raising fish in ponds, in the ocean, or in tanks. c. It currently provides more than half of the fish that people eat. d. A and B e. A, B and C 8. Which of these is not true of aquaculture? a. Aquaculture-raised fish tend to be healthier and have fewer diseases or parasites than wild-caught fish. b. Fish farms cause environmental damage by displacing wetlands or releasing large amounts of fish waste. c. Fishing pressure on wild stocks can still be high if fish are fed fish meal. d. Non-native or genetically modified fish might escape into the wild. 9. Which of these is an advantage of recirculating aquaculture systems (RAS)? a. Marine fish can be raised in ocean net-pens without contaminating the surrounding water b. Large, marine species can be reared indoors in tanks far from the ocean, reducing transportation costs and providing a fresher product to market. c. Very little water is used in these systems so they are good to use in water-poor areas. d. The fish raised this way have more protein in their muscle than wild caught fish so they are more nutritious. 10. Why was the rearing of marine species in tank aquaculture so difficult before Yonathan Zohar figured out how to do it? a. It was hard to get the fish to breed and produce offspring for the aquaculturist to raise. b. Because the fish were stressed in tanks, they required much more food, reducing the profitability of rearing the fish this way. c. The fish had to be raised in a community with several species of fish in the same tank, and they would attack and eat each other. d. Marine fish are more aggressive than their freshwater relatives and they tended to fight a lot, often killing some of the other fish in the tank. 6. Sustainable fishing would include which of the following: a. Allowing fishing that "fully exploits" a fish population. b. Fishing at or below the maximum sustainable yield of a fish population. c. Fishing that removed fish faster than they are replaced in one area as long as there is a healthy population elsewhere. d. A and B e. A, B and C

Explanation / Answer

6 Option C is correct

Modern spearfishing is practiced all over the world, including in South America, Africa, Australia, and Asia. In many cases, spearguns are now used to propel the spear underwater. Spearfishing is a popular recreational activity in some areas of the United States, including Florida and Hawaii. This fishing method is considered sustainable because it targets one fish at a time and results in very little bycatch.

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