The source material must come from: Criminalistics 10th Edition, 2011 ISBN 13: 978-0-13–504520-6 Author Richard Saferstein Publisher: Pearson Prentice Hall. Use a standard essay format for responses to all questions (i.e. an introduction, middle paragraphs and conclusion). Responses must be submitted as a MS Word Document only, typed double-spaced, using a standard font (i.e. Times New Roman) and 12 point type size. Must be between 350-500 words, 1-2 pages. The essay must answer this question,” An individual who has been using a drug for an extended period of time suddenly finds he is unable to secure more of the drug. He acts nervous and irritable and is hyperactive. He seems almost desperate to find more of the drug, but experiences no sickness, pain, or other outward physical discomfort. Based on his behavior, what might he possibly have been using? Explain your answer..”