Ecosystem Class Response

The class response that I am doing is about the ecosystem.I learned new interesting facts about a ecosytem like how it is living and nonliving interacting ,basically anywhere could be a eycosystem , and how the living organisms and non living organism's use each other to survive.I also learned more information like how organism's use each other to survive, like how the animal's in the desert use the sand and dig whole's and sleep in there were it is cooler at night. Also how cactus can soak up water and save it.I've got this last two piece's of information from http://www.brainpop.com/science/ecologyandbehavior/ecosystems/. My opinion on this subject is that for different place's there are "in a way" different ecosytem.Like the desert human's would not be able to survive in there for long they dont have or do half of the stuff that the animal's do to survive in the desert , they would only really be able to survive in their own ecosytem.