调查表明这些鸟的死亡和污染有关系的翻译：Investigation showed that the birds died and is related to pollution 什么意思？中文翻译英文，英文翻译中文，怎么说？

青云英语翻译

Survey showed that the death of these birds and contamination have

Investigation showed that the birds died and is related to pollution

The investigation indicated these bird's death and the pollution have the relations

Surveys indicate that the bird's death and pollution have relations

Investigation showed that the birds died and is related to pollution