Question

1. Why is lead harmful to humans?
2.where did the lead come from

Answer 1

Answer:

Exposure to high levels of lead may cause anemia, weakness, and kidney and brain damage. Very high lead exposure can cause death. Lead can cross the placental barrier, which means pregnant women who are exposed to lead also expose their unborn child. Lead can damage a developing baby's nervous system.

Lead is a toxic heavy metal found in mineral deposits in the earth's crust. It does not usually occur naturally in drinking water, but can be present from the use of lead-based solder or lead pipes, or from a contaminated water source