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To complete your SLP, you will complete your analysis of the peer-reviewed article by Urakawa et al (2012) that described the influence of crude oil on two groups of bacteria, Eubacteria, , and Archaea, ; that utilize different methods of metabolism.  Now that you understand the taxonomic and metabolic differences between these two species, think about how these organisms interact with their environment and how these interactions could potentially affect other populations of organisms.  As you prepare to complete this final component of the SLP make sure you think about the nutrients and chemicals that these organisms consume for energy, removing it from their environment, and produce as a byproduct, adding it their environment.  By both removing and contributing chemicals and nutrients to their environment, these organisms can alter the availability of nutrients for other organisms. As we discussed on the Home page of Module 5, the success of individuals, and ultimately of populations of organisms as a whole, is largely determined by their ability to acquire resources from their environment to the extent that they can find a

mate, reproduce, and pass their “successful genes” onto their offspring.   The term , describes the role of environmental pressures on determining the success of species.  Over long periods of time, the theory of natural selection helps us to understand how species have evolved.  Proceed through these brief tutorials developed by the University of California, Berkeley, to understand more about natural selection, and its relevance to your SLP: Follow the arrows and read the sections on and Now complete your research on and using the resources below: First, visit this website developed by Texas A&M University’s Department of Oceanography: to learn more about the marine foodweb, and the relationships between microogranims and larger organisms that inhabit the oceans. Now read the following article from the University of Washington and this article from the University of Illinois, Urbana-Champaign, to consider additional byproducts and nutrients that these microbes can contribute to the environment, thereby influencing the metabolism of other species. After completing your readings, address the following in a 2-3 page paper: