Slide 1Evolution Chapter 15 Slide 2 Evolution Evolution, or change over time, is the process by which modern organisms have descended from ancient organisms. Slide 3 Voyage…

Slide 1 Slide 2 FOSSILSFOSSILS Slide 3 In 1869, John Wesley Powell led a pioneering expedition through the Grand Canyon. Powell, who later went on to head the U.S. Geological…

Slide 1Evolution Slide 2 10.1 – Early Ideas About Evolution Key Concept There were theories of biological and geologic change before Darwin. Slide 3 Early scientists proposed…

1.Geologic TimeChapter 122. Outline• Geologic time: perspective & a bit of history• Dating geologic materials -General: relative & absolute dating -Relative dating:-7…

1. Chapter 12 Deep Time: How Old Is Old?LECTURE OUTLINEearthPortrait of a PlanetThird Edition ©2008 W. W. Norton & Company, Inc. Earth: Portrait of a Planet, 3rd edition,…

1. UFO… 2. UFOs: True or false? 3. ***Start of Urban Legends 4. Why bother with SETI if UFOs are already here? 5. Flying saucers are popular in the movies… 6. When were…

1. EVOLUTION OF FORESTS 2. The Devonian is a geologic period of the Paleozoic Era spanning from the end of the Silurian Period, about 419.2 mya to the beginning of the Carboniferous…

Slide 1 Slide 2 Early scientists proposed ideas about evolution. Evolution- is the change of a species over time where a descendant become different from their ancestors…

Slide 1GIFTS FROM THE PAST What are the gifts from the past? Slide 2 1. Sketch the fossil. 2. List inferences you can make about this organism. 3. What 2 pieces of information…

Slide 1 © 2011 Pearson Education, Inc. Key Concepts Nucleotides consist of a sugar, phosphate group, and nitrogen- containing base. Ribonucleotides polymerize to form RNA.…