User:Ellery C. Spahr/Notebook/Biology 210 at AU

January 21, 2014

Current (extant) organisms originated from a single ancestor, which evolved and diverged from natural selection.

E.S.

---

Observations of the "Marsh" at American University

January 25, 2014'

Purpose This experiment observed and tested a 20 by 20 meter transect at American University. Inspecting this niche offers insight into the abiotic and biotic components, which may have symbiotic or competitive relationships.

Materials and Methods First, I examined the assigned transect for thirty minutes. This transect sits approximately 30 feet from the Kogod School of Business, and 50 feet from the Massachusetts Avenue. Through the course of this examination, I drew a topographical arial map [attached]. I then collected 50 mL of soil and plant matter. An estimated 50 percent of the collection contained soil and 50 percent plant matter, such as moss and grass. During this collection, the temperature in Washington, D.C. fell between 35 and 40 degrees Celsius.

Data and Observations