| 单词 | bioindicators |
| 释义 | bioindicatorsDefinition Fish and other freshwater creatures whose death or unusual behavior may indicate presence of toxic substances which were not detected by test instruments. Use 'bioindicators' in a SentenceThe sudden death of massive numbers of fish, frogs, or birds near or within a body of water are bioindicators of contaminates that may not be detected by more technology based observations. Many lakes in New York State are being cleaned this year because of bioindicators of hazardous materials in their waters. More and more often, we are seeing the bioindicators along the banks of the small stream behind the printing shop, possibly evidence of waste materials being dumped illegally into the waters. |
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