【正确答案】 Projections of world fishery production in 2010 range between 107 and 144 million tonnes, of which about 30 million tonnes will probably be reduced to fish meal and oil for non-food use. Estimated quantities which will be available for human consumption range between 74 million tonnes and 114 million tonnes. Most of the increase in fish production is expected to come from aquaculture. The contribution from capture fisheries will depend on some further development and also on the effectiveness of fisheries management, Optimistic scenario of it is 105 while Pessimistic scenario 80. It Is believed that improved management of currently over fished stocks could provide on increase of less fish for non-food uses and available for human consumption, whereas continued over fishing will lead to declining production, as reflected in the pessimistic scenario in the table, 33 and 74. In conclusion, the difference between lower and upper projection levels for 2010 actually exist. The optimistic scenario is the figure that we hope to see.