overfishing of the world’s oceans threatens many species with extinction and is putting the livelihood of milions of people around the world at risk. What are the causes of this problem and what be done to prevent it from happening. you should use your own ideas knowledge and experience and support your arguments with examples and relevant evidence.Many city centres these days have traffic flow problems, causing congestion and pollution. One solution is to build fast ring roads on the outskirts of a city, taking traffic away from the centre. While this is helpful in some ways, it also causes new problems. To what extent do you agree or disagree?