<br />The engineer in the Department of Chemical Engineering and Petroleum Industries, Zeina Qasim Alwan, wrote an article entitled (Precipitation and the effect of the catalyst on chemical processes). The content of the article was: Precipitation is a natural process that plays an important role in shaping the earth’s surface and forming rock layers. This process is affected by several factors,<br />Among them are chemical factors that include chemical reactions occurring during deposition, which can be greatly affected by auxiliary factors.<br />Let's take a closer look at how cofactors affect chemical processes during deposition.<br /># Precipitation and chemical reactions: