Eographical information system and agriculture

The paper should be 4 pages in length (excluding references, tables and figures). the first page should include a complete and comprehensive definition of what
GIS is, how it is used,programs,data and other aspects of the technology. THE REST OF THE PAPER SHOULD EXPLAIN THE DIFFEENT WAY GIS IS USED WITH AGRICULTURE. I need the references cited at the end. THE ESSAY MUST INCLUDE ALL THIS INFORMATIN. THANK YOU. I hope you can do this for me.