2. WARMUP # 3 S7L5c. Explain how a fossil record found in sedimentary rock provides evidence for the long history of a changing life forms. What do you think Early Earth looked like? Describe the air, land, vegetation and any organisms you think may have existed.

3. “DO NOW” # 3 – pg 200 I. ERAS in the Time Scale A. Division of Time 1. What do scientists think that the Earth looked like during the Precambrian time? 2. What is cyanobacteria and how does it get its food? 3. Describe the animal life during the Paleozoic Era. 4. Describe animal and plant life during the Mesozoic Era. 5. What does Cenozoic mean and what type of life existed during this time?