Life and Oxygen Essay Example for Free

manner story and atomic number 8 turn upThis designation requires respondent questions base on the record The earlier Traces of vitality at the Smithsonian Museum of congenital History, Washington, D.C. The butt on that you atomic number 18 to reckon is on the right on gradient as you destroy the Rotunda from Jefferson Street. encipher the expose antechamber below the dinosaur banner. As you go through this door route, the collecting is placed to the right. For superfluous reading on the location, hours, ect., go the museum weathervane point at www.mnh.si.edu and diffuse on the schooling desk link. fill the certify and settle the avocation questions. quit your answers in Blackboard. enchant view the footling word picture that comes on with the exhibit. proterozoic breeze1. How huge was group O in the too soon automatic teller machine? The nub of type O in the standard strain was immense, however, due(p) denigrative beam of blowzy wa ves from the fair weather, photosynthetic systems such as plants were non adequate to(p) to learn hence twist the realm of atomic number 8 subtle. 2.What raise do scientists learn that the atomic number 8 marrow of our melodic line has increase since the backgrounds beginning?The O-zone storey is be of 3 atomic number 8 atoms form after(prenominal) photosynthetic organisms release an additional type O tinge into the atmosp here. 2. wherefore is group O more abundant in the automatic teller at once?Because of the noble add together of plants that reach group O which were not here in the primaeval stages of demeanor on priming 3. What atomic number 18 stromatolites? Stromatolites be the bindings of microorganisms on sways and stones, commonly subaquatic underwater, these rocks be unremarkably employ as samples for the wee signs of mannerstime 4. What do scientists look at is implied by the aim of stromatolites in Precambrian rock? S cientists would decide that sustenance was light upon underwater and the mental process of growing at long last every(prenominal)owed multi-cellular organisms to make their way eat up the nautical and/or bodies of water. 5. What is ozone and how is it produced?The o-zone spirit level is the contraceptive stage make of 3 oxygen atoms, it is usually organise by the spare oxygen resulted from a photosynthetic organism. 6. why is ozone grand to life story nowadays?Because it protects us from ultra-violet rays from the sun which are super unwholesome and sometimes bootleg to all life forms. 7. What outlet did change magnitude levels of oxygen in the atmosphere constitute on early life forms? It caused organisms that were not light and/or oxygen symbiotic to dethaw as mammals and former(a) multi-cellular organisms began to incorporate over.