Slide 1Chapter 17 – The History of Life Section 17-1: The Fossil Record Slide 2 The fossil record shows how species have changed over time. Paleontologists are scientists…
Earth’s Eras Geologic Timeline 3R *Write things that are in black for our notes. Put the following in order from oldest to most recent First birds 1.Earth’s formation…
Slide 1Chapter 7 Earth and the Terrestrial Worlds Understanding the similarities and differences between the planets of the solar system, in particular, the four terrestrial…
Slide 1 Average Composition of the Troposphere Gas Name Formula Abundance (%) Residence time (approx) Nitrogen N 2 78.08%42,000,000 years Oxygen O 2 20.95%5,000 years *Water…
Slide 1 Do Now: How has the environment changed over time? Be specific, support your answer with an example.. Slide 2 Aim: How has Earth’s environment changed over time?…
Slide 1 Slide 2 Earth in the Universe Explaining Earth’s Position & Motion in the Universe Slide 3 What is a Universe? A celestial creation made up of many galaxies—approximately…
Slide 1 Chapter 3 Section 2 Slide 2 The Atmosphere Earth is surrounded by a mixture of gases called the atmosphere. Nitrogen (78%), oxygen (21%), carbon dioxide, and other…