Chapter 15: Tracing Evolutionary History # 152826 Cust: Pearson Au: Reece Pg. No. 97 Title: Active Reading Guide for Campbell Biology: Concepts & Connections, 8e C / M / Y / K Short / Normal DESIGN SERVICES OF S4-CARLISLE Publishing Services Copyright ? 2015 Pearson Education, Inc. 97 Chapter 15: Tracing Evolutionary History Guided Reading Activities Big idea: Early earth and the origin of life Answer the following questions as you read modules 15.1?15.3: 1. Ancient rocks constructed by ancient prokaryotic cells are referred to as ____________. 2. The prokaryotes that made the stromatolites were photosynthetic. Why does that suggest that these were actually not the first organisms that inhabited the planet?