Impact of heavy metals on <i>Ciconia boyciana</i> feathers and <i>Larus saundersi</i> egg shells in the Yellow River delta estuary.

There was a highly significant positive correlation between Cr and Mn, Cr and Ni, and Mn and Ni.

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When the P value is less than 0.05, it is considered that there is a significant linear regression relationship between the heavy metal concentration and the pollution source, and there is an extremely significant linear regression relationship when it is less than 0.01.

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