3 pages essay answering the following question:
what is the difference between self-interest Vs. altruism according to the assigned readings, and how are these important to the land pyramid?
please try just to cite the assigned readings, try as much as you can not to use any outside sources, maybe one outside source is fine.
APA style.
2 assigned readings are attached, and the third one use the following link
http://oregonstate.edu/instruct/phl201/modules/texts/text3/leopold.html
