Industrial+Water+Pollution

=Sources of pollution=

media type="custom" key="9733112" =Problems caused by pollution=
 * 1) Mercury
 * 2) Lead
 * 3) Nitrates
 * 4) Oils

= **ways to avoid pollution** =
 * 1) lead is a general toxin that builds up in th skeletal and its effects are most serious in infants and young children up to six years of age and pregnant women.
 * 2) cyanide water is highly toxic to humans it is readily absorbed by the gut and causes symptoms of very small completion
 * 1) hazardous materials should be properly stored treated and disposed of