Paragraph 3__________ 查看材料A.No evidence to indicate

Paragraph 3__________ 查看材料

A.No evidence to indicate bad effects of naturally contaminated soil

B.Potential hazards of human contaminated soils

C.Research on channels of heavy metals getting into human food chain

D.Geology and health problems

E.Rocks-the ultimate source of soil pollution

F.Long-term health effects on children

请帮忙给出正确答案和分析，谢谢！