Researchers suspect the decline in male births can be explained, at least in part, by paternal exposure to environmental toxins, such as certain pesticides, heavy metals, solvents or dioxins -- chemical byproducts produced during incineration or the manuf
Researchers suspect the decline in male births can be explained, at least in part, by paternal exposure to environmental toxins, such as certain pesticides, heavy metals, solvents or dioxins -- chemical byproducts produced during incineration or the manuf
研究人员怀疑，男孩出生数量的下降一部分是由于父亲与杀虫剂、重金属、溶剂或二恶英等环境中的有毒物质的接触造成的，这些有毒物质是在燃烧或制造其它化学物质过程中所产生的化学副产品。