Holt Environmental Science Active Reading Workbook Environmental Science Active Reading Workbook helps students practice essential reading skills as they analyze passages from the text. Grade: 9 Material Type: Student Materials, Workbooks/Worksheets Format: Softcover, 120 Pages ISBN-13/EAN: 9780030665943 ISBN-10: 0030665949 Product Code: 1137026 National/State: National Copyright Year: 2004