如果火星上的黄钾铁矾也是在微生物的帮助下形成的，我们就有可能在所找到的样品中发现它们的残留物。
It's possible that if the jarosite on Mars was also formed with the help of microorganisms, we might be able to detect remnants of them in the samples we find.
因而，鱼类和贝类由于“生物积聚”积累了极高水平的毒素和化学残留物在鱼肉中。
Consequently, fish and shellfish can accumulate extremely high levels of toxins and chemical residues in their flesh due to "bio-accumulation".
对大面积“死水区域”来说化肥残留物是罪魁祸首，在墨西哥湾，氧气耗尽的死水区域几乎没有海洋生物生存。
Fertilizer runoff is responsible for a vast "dead zone," an oxygen-depleted region where little or no sea life can exist, in the Gulf of Mexico.
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