This document discusses the use of biotechnology in various fields such as agriculture, food, industry, medicine, and the environment. It provides examples of how biotechnology has long been used to produce useful products through fermentation and genetic engineering. Specifically, it mentions how organisms and their products are used in beer/wine production, vaccines, cheese making, probiotics, soil inoculants, and more. The document then discusses newer technologies like genetic engineering that allow recombinant DNA techniques to genetically modify organisms for traits like pest resistance.