EARTHSC 1100 Lecture Notes - Lecture 23: Prokaryote, Hadean, Phanerozoic
10 Apr 2018
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Looking at time problems examples from last time. There will be a grid behind the islands on the exam to help with measurement using a scale. Moreabsoluteageproblems-1. pdf on canvas for more practice and explanations. Global climate change is the last thing we"ll talk about before the exam. Convert atmospheric level of carbon dioxide from 280 ppm to a percentage. Select the following that release carbon dioxide into the atmosphere. Select the two things that cause an ice age to begin. Number ten"s answer is in the red box at the top of the article. Key ingredients for life; reason life is unique to earth (review) Early earth was too hot for liquid water. Source of water: volcanoes vent h2o vapor and/or comets (dirty snowballs from space) With volcanoes, the vapor goes up into the atmosphere and condenses, then is rained back down onto earth. Photosynthesis uses every color of light except green.
