Why lead can be dangerous
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Do you know what lead is?
No, I don't. What is lead?
Well, you see, lead is a heavy metal that is denser than most common materials.
It can be used as the tool to put in mechanic pencils to write.
Lead can also be very dangerous though. High levels of lead can lead to damage in the kidneys and nervous system.
Lead is carcinogenic to humans, which means that it is a substance capable of causing cancer in living tissue.
Humans can be exposed to lead through inhalation and ingestion. Lead can be found mostly in the use of fossil fuels.
To avoid exposure to lead, you can clean dusty surfaces, keep the house clean and by washing your hands.