Prelab questions
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 Ring-billed gull
Using the data in table 1, draw a graph of the DDT residues for each trophic level. (Include a title, x and y axes, and their units.)
Analysis questions Does the result support your hypothesis on page 1? Why or why not? Explain your answer. Why do you think the concentration of DDT changes at each trophic level in the way it does? Why were large carnivorous birds especially vulnerable to DDT? (Hint: DDT is not digested or excreted but remains in the body of an organism.) Extra credit: Use the Internet or books to find effects of DDT on human bodies. References Dave, S. (2007). [Illustration].Wet Canvas. Retrieved from http://www.wetcanvas.com/forums/showthread.php?t=395602 Phytoplankton. (n.d.). [Illustration]. Retrieved from http://jrscience.wcp.muohio.edu/climate_projects_05/productivity/Phytoplankton.html Solomon, Berg, and Martin. (2008). Biology. Belmont, CA: Thomson Higher Education. pp. 1171-1172. Virginia Institute of Marine Science. (2013). Information from FAO Species Identification Guide Western Central Atlantic Northern brown shrimp - Farfantepenaeus aztecus. Retrieved from http://www.vims.edu/research/departments/fisheries/programs/multispecies_fisheries_research/species_data/brown_shrimp/index.php Wikimeida. (2010). [Illustration]. Garfish (Atlantic Needlefish). Retrieved from http://commons.wikimedia.org/wiki/File:Garfish_(Atlantic_Needlefish)_(PSF).png Woodwell, G.M., Wurster Jr,C.F., and Isaacson, P.A. (1967). DDT Residues in an East Coast Estuary: A Case of Biological Concentration of a Persistent Insecticide. Science, 156 (3776 ). pp. 821-824 DOI: 10.1126/science.156.3776.821 Directory: 2013 2013 -> Annual InStructional unit plan 2013 -> The Ministry of Education and Science of Ukraine 2013 -> #1 a lifesafer of virginia inc 2013 -> Name(s): your name here team or Group #(if applicable): Professor’s name 2013 -> Alcott Local School Council (lcs) Meeting Minutes 2013 -> Table Of Contents introduction 2 2013 -> Supplemental demographic information 2013 -> 【Education&Working Experience】 Download 219.54 Kb. Share with your friends:
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