Answers

2016-01-16T18:58:59+05:30

they act as posion in our body and which can be fatal for humans
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2016-01-16T19:01:06+05:30
Mercury and lead are highly toxic substances for humans. Mercury causes cancer in humans. both are highly toxic to the developing brain and nervous system. Excessive exposure can begin in the intrauterine period, leading to adverse effects at birth. Prenatal exposure is more common with mercury, whereas lead poisoning is more common during the first few years of life.
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