From my reasoning, human-environment interaction is shown because New Orleans is this constantly flooded place, and humans are always trying to counter Mother Nature by building levee's and dam's and etc.
Yes, it is well in depth and has a line of reasoning. It is a well developed thesis
Decomposers are necessary to the food chain because they break down the results of the food chain into the basic elements that producers can then use to begin the process over again. Decomposers include groups of bacteria that help to speed up the decaying process of dead plants and animals.
Hope that helped! =)
The term biogeochemical is a contraction that refers to the consideration of the biological, geological, and chemical aspects of each cycle.