1.Differentiate between HeaLY and HALE. 2.What are the criteria for establishing a cause-and-effect relationship? 3.Describe how descriptive and analytical epidemiology are used. Paper is organized & includes concise and well developed introductory, Abstract, and concluding paragraphs. Use of three (3) scholarly references Demonstrates great comprehension of the assignment question; meets minimum page requirement of 3 pages (excluding title page and reference list). Correct APA format and use of software formatting tools (title page, level headings, page numbering, in-text citations, and reference list). Error free writing composition (use of third person; correct spelling, correct grammar and sentence structure).