Genetic engineering is a way in which specific genes from an animal or plant can be extracted and reproduced to form a new animal or plant. These new organisms will express the trait required for that gene. This practice is a very controversial topic in the scientific world. It is implemented in various sectors such as agriculture, although there are many alternatives that can be found for genetically modified crops, such as organic materials and reducing soil run-off. The controversy surrounding this practice occurs because it is believed to bring both negative and positive implications and dangers, not only to oneself but to the environment as a whole. Genetic engineering increases the agricultural economy, yields of agricultural products and also causes negative effects on the ecosystem. Genetic engineering improves plant resistance to drought, salinity, disease, pests and herbicides. The goal is to try to improve the growth, productivity, nutritional value and chemical composition of plants. Chemicals are constantly being developed or improved to improve the competitiveness and adaptability of crops and to kill pests and weeds that plague the agricultural sector. . This, however, is not always a good thing as the plant and pests become resistant to these new chemicals defeating the purpose of using them. New chemicals produced to kill these strong pests and weeds can be more harmful to other plants and remove nutrients from the soil, in turn reducing the yield of agricultural crops. The advantages of these characteristics are seen in Argentina according to Pelletier (2010) since they use soya resistant to glyphosphate which has allowed the return of this crop, such as... half of the paper ......9). Agricultural biotechnology: using genetic engineering to produce superfoods. Retrieved March 9, 2011 from the editorial team http://suite101.com/content/agricultural-biotechnology.htmlILEIA (2001, December). Genetic Engineering: Not the Only Option [Electronic version]. LEISA magazine, 17.4. Retrieved March 9, 2011, from http://www.agricultresnetwork.org/magazines/global/ge-not-the-only-option/genetic-engineering-not-the-only-option-editorialPelletier, C. (2010) . Future evolution of genetic engineering. Retrieved March 9, 2011, from http://hfgfoodfuturist.com/2010/12/09/future-evolution-of-genetic-engineering.htmlUnion of Concerned Scientists (2002). Biotechnology and global food supply. Retrieved March 9, 2011, from http://ucsusa.org/food_and_agriculture/science_and_impactsimpacts_genetic_engineering/biotechnology-and-the-world.html