In the first problem raised in the video, wild fish are being caught in a way that cannot last. Recall the reason for this. They are being caught faster than they can reproduceThey are being caught faster than people can eat themThey are a non-renewable resource

The amount of food provided by wild-catch fish is plateauing worldwide, while the amountprovided by aquaculture is increasing. Suggest reasons for this

Which of these is not an example of sustainable fishing?Banning fishing in the breeding seasonSetting quotas on numbers of fish that can be caughtFish farming (of caged fish)Decreasing the size of the holes in fishing nets2What causes eutrophication?Excessive use of fertilisersCombustion of fossil fuelsMining for fossil fuelDeforestation3What is meant by the term ‘extinction’?A species has decreased in number, but then recoversA species has completely died outA species has increased in numberA new species is formed by natural selection4Which of the following activities does not help to protect endangered species?Introducing non-indigenous speciesMeasures to prevent poachingCapturing and culling non-indigenous speciesCaptive breeding programmes

The increase in the frequency of one phenotype in a wild population of fish could be due to: 1. an advantageous mutation. 2. increased reproductive success of individuals with that phenotype. 3. a change in the environment. A) 3 only B) 1 and 2 only C) 1, 2 and 3 D) 2 and 3 only E) 1 only

Kathy is studying adaptations in tropical fish. Which of the following is not an adaptation to prevent predators from eating a fish?Group of answer choicescamouflagethe ability to change direction quicklya sucker-like moutha spiny tail

Explain why this system may cause fewer environmental impacts than systems thatfarm only fish.