Chemical contaminants present in foods are often unaffected by thermal processing (unlike most microbiological agents). Chemical contaminants can be classified according to the source of contamination and the mechanism by which they enter the food product.nvironmental contaminants are chemicals that are present in the environment in which the food is grown, harvested, transported, stored, packaged, processed, and consumed. The physical contact of the food with its environment results in its contamination. Possible sources of contamination include:
For the record,  cfprefsd is a fundamental part of the MacOS operating system. It's a tool developers use when they write their application, and allows an application to read/write/modify preferences files (like files ending in .plist, and others).
What is cfosspeed.exe from cFos Software GmbH? cfosspeed.exe is part of cFosSpeed Window. Find out what cfosspeed.exe is doing on your PC, and if it is safe and stable, detailed performance information and how to remove it.