Life and Oxygen Essay

This assignment requires answer questions based on the exhibit The Earliest Traces of Life at the Smithsonian Museum of breedinglike History, Washington, D.C. The exhibit that you are to see is on the right side as you enter the Rotunda from Jefferson Street. Enter the exhibit hall under the dinosaur banner. As you go through this doorway, the exhibit is located to the right. For additional information on the location, hours, ect., go the museum web site at www.mnh.si.edu and click on the Information desk link. report the exhibit and answer the following questions. Submit your answers in Blackboard. Please trance the short movie that comes along with the exhibit.Early Atmosphere1. How abundant was atomic number 8 in the premature ambience? The amount of oxygen in the atmospheric state was abundant, however, due harmful radiation waves from the sun, photosynthetic systems such as plants were non able to evolve thus leaving the state of oxygen subtle. 2.What distinguish do sci entists have that the oxygen content of our atmosphere has increased since the domains origin?The O-zone socio-economic class is composed of 3 oxygen atoms organise after photosynthetic organisms release an bare oxygen molecule into the atmosphere. 2. wherefore is oxygen more abundant in the atmosphere instantly?Because of the gamy amount of plants that produce oxygen which were not here in the early stages of life on earth 3. What are stromatolites? Stromatolites are the bindings of microorganisms on rocks and stones, usually submerged underwater, these rocks are usually used as samples for the earliest signs of life 4. What do scientists think is implied by the presence of stromatolites in Precambrian rock? Scientists would purpose that life was formed underwater and the process of evolution eventually allowed multi-cellular organisms to machinate their way off the ocean and/or bodies of water. 5. What is ozone and how is it produced?The o-zone layer is the protective la yer made of 3 oxygen atoms, it is usually formed by the extra oxygen resulted from a photosynthetic organism. 6. Why is ozone important to life today?Because it protects us from ultra-violet rays from the sun which are extremely harmful and sometimes pitch-dark to all life forms. 7. What effect did increased levels of oxygen in the atmosphere have on early life forms? It caused organisms that were not light and/or oxygen dependent to disappear as mammals and other multi-cellular organisms began to take over.