17 词条主页 > 词条 > 拉丁美洲西班牙语 (XL) > pesticidas persistentes
pesticidas persistentes
Pesticides that do not readily break down in the environment. Becoming long-lived components of the ecosystem, these chemicals may have enduring effects at low concentrations or may bioaccumulate, posing hazards to higher predators.
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rascacielos
A multi-storied building constructed on steel skeleton, combining extraordinary height with ordinary rooms such as would be found in low buildings, ...
