nbsp;makes water oxygen insufficient , stifles fish. But the water hyacinth is also human being's virtuous companions and worthy friends, industry such as hastening after wealth and avoiding damage with the science method , being able to reach the eliminate the job contaminating , developing animal husbandry , the organic fertilizer or manure , organic fruit vegetables job , green gas job, oil grain price difficult problem , the bottleneck problem resolving economic growth's that the world height resolving a nowadays anxiously expects.
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