undefined7a8a379b-b685-4069-bfc0-6773cf1eaaf0.mp3 Looking at it this way, we can see the problem that the hungry seabirds are facing: their ecosystem has changed, and there just aren’t enough fish in the sea. undefined7551e54e-4ee3-4be5-bd6b-d7b2ea0e811b.mp3 For decades, the numbers of fish in the North Sea have been declining due to over-fishing. undefineddfc56371-3dac-4266-a1e3-7f263f086901.mp3 As you can see, over a ten-year period, the numbers of different fish in the North Sea have fluctuated, but the overall trend is downwards. undefined914b3cef-02f6-4741-a4bd-1465de49e733.mp3 Look at ‘cod’. In 1998,, fishermen were allowed to catch almost 60 000 tons; only ten years later this has fallen dramatically to under 10 000.. undefinede6cafd5b-f5d2-4e00-bd29-82e6ce7e1703.mp3 Why?
0Looking
at it this way, we can see the problem that the hungry seabirds are
facing: their ecosystem has changed, and there just aren’t enough fish
in the sea. 0For decades, the numbers of fish in the North Sea have been declining due to over-fishing. 0As
you can see, over a ten-year period, the numbers of different fish in
the North Sea have fluctuated, but the overall trend is downwards. 0Look
at ‘cod’. In 1998, fishermen were allowed to catch almost 60 000 tons;
only ten years later this has fallen dramatically to under 10 000. 0Why?