Editing redundancies  There are a couple of redundant phrases that Ive altered but I am open to input if people think these statements could be further improved  Ive changed the opening sentence from A preservative is a natural or synthetic substance or chemical that is added to products to A preservative is a naturally occurring or synthetic substance that is added to products In this case chemical and substance are effectively synonymous and I fear that chemical is used here to capitalize on the common fear and misconception that chemicals are always bad  However if people feel that chemical should be retained thats fine but I dont think we need to use both chemical and substance since in this instance they basically mean the same thing  I also changed the second sentence of the Preservatives in food section from Preservatives may be antimicrobial preservatives which inhibit the growth of bacteria and fungi and mold growth to Preservatives may be antimicrobial preservatives which inhibit the growth of bacteria or fungi including mold and added links to fungi and mold  Mold are fungi so I felt this was redundant  Any thoughts  I think this article needs a lot of work but I just thought I would fix a couple of small things for now