During the 19th century, it was common to hear people
in Europe and America say that the sources of the sea were S1. ______
unlimited. For example, a noted American biologist in the
mid 19th century commented that none of the great sea
fisheries are to be exhausting. Today though, there is S2. ______
evidences that the resources of the sea are as seriously S3. ______
endangered as that of the land and the air, and that the S4. ______
endangered species include Herring and Carp as well as the
African Elephant, Indian Tiger, and the American Eagle.
Further, the threats to fish are more alarmed in some ways S5. ______
than the threats to animals and birds. This is because of fish S6. ______
is a much needed food resource and people throughout the
world depend on fish as an important part of their dish, and
the decline in the fish supply could have extensive effects in S7. ______
hunger and population. Fishermen in the North Atlantic
alone annual harvest 20 billion pounds of fish to satisfy food S8. ______
demands, but it is important to recognize that these practices
cannot continue without depleting fish storage within the next
few years. Sea resources are rapid declining in many parts of the S9. ______
world, and the problem cannot ignore. We can predict that food S10. ______
supplies in the sea cannot last forever.
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请帮忙给出每个问题的正确答案和分析，谢谢！