In America, a pesticide, a chemical, called DDT was harming the falcon eggs.
在美国，一种叫做滴滴涕的杀虫剂正在伤害隼卵。
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More than 40 tons of methyl isocyanate spilled from a Union Carbide-owned pesticide factory in Bhopal, India, in 1984, killing more than 20, 000 people in the world’s worst chemical disaster.
Pyrethrum possesses some ideal characteristics of environmental compatible chemicalpesticide, however its photo lability and expensive price limit its broad use in the field.