Question

Why lead, mercury, fluoride and cadmium are present the greatest threat to human heath?​

Answer 1

• Humidity is the concentration of water vapour present in the air. ... For example, a parcel of air near saturation may contain 28 g (0.99 oz) of water per cubic metre of air at 30 °C (86 °F), but only 8 g (0.28 oz) of water per cubic metre of air at 8 °C (46 °F).

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Answer 2

Answer:

Exposure has toxic effects in almost all organs in the human body as lead and mercury are neurotoxic and cardiotoxic in nature [5, 6]; it affects the gastrointestinal system and causes respiratory illness, hearing loss, and cancer [4, 7].