Hi @engrkomoo, always acknowledge quoted article by using the using the quote markdown > and referencing the quote.

You wrote

Persistent Organic Pollutants (POPs): persistent organic pollutants are compounds that are resistant to environmental degradation through biological, chemical, and photolytic processes. Persistent organic pollutants have been observed to persist in the environment, bio-accumulate in human and animal tissue, bio-magnify in food chains, and to have potentially significant impacts on human health and the environment.

and I found

Persistent Organic Pollutants (POPs): persistent organic pollutants are compounds that are resistant to environmental degradation through biological, chemical, and photolytic processes. Persistent organic pollutants have been observed to persist in the environment, bio-accumulate in human and animal tissue, bio-magnify in food chains, and to have potentially significant impacts on human health and the environment.Source.