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) Use the presentation below to guide you through completing today's tasks for your bridge company. Project Directors: Make sure you are continuing to update your journal each day (see the Bridge Project website).Accountants: If you are having difficulty accessing your spreadsheet, try starting at sheets.We know the oldest rocks are at the bottom and the youngest are at the top, but we want some actual dates. Drag and drop the rock sample from each layer onto the dating method you think will tell us its age.
This then can be used to deduce the sequence of events and processes that took place or the history of that brief period of time as recorded in the rocks or soil.Other relative methods include chemical dating, biostratigraphic or faunal dating, and cultural dating.Chemical dating, such as fluorine dating, compares the relative amounts of absorbed fluorine in bones from the same site.For students in the 2004 Graduation Program, all Grade 12 exams are optional except for the Language Arts 12 and BC First Nations Studies 12 exams.Optional exams will be offered in sixteen Grade 12 courses (the same as the existing set of exams).