11. What are persistent
organic pollutants(POPs)?

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POPs, or persisten torganic ,
are toxic substances formed
organic compounds. POPs are in
several industrial processes, the
production of PVC, whitened by
chlorine, herbicides, and
fungicides, and also the incineration
of waste. of POPs are dioxins,
, chlordane, DDT, dieldrin,
heptachloride, and
hexachlorbenzene.

POPs are and highly harmful since,
the heavy metals,they are
, i.e., they are not
by the body and
even more in each trophic
level of the chains. In humans
POPs cause cancer and nervous,
and reproductive impairments.