Lecture 5 - Populations and ecosystems (continue). In chapter students explored: Their own plot of land, a tiny section of an ecosystem. They should have catalogued the organisms that live in it and the physical environment that provides the resources organisms need to survive; These resources include water; soil; the appropriate temperature; gases, such as carbon dioxide and oxygen; organic and inorganic nutrients; sunlight; and shelter. they should have observed that organisms in an ecosystem may cooperate or compete for these resources and that these interactions can vary. | Lecture Science 1 - Associate Degree in Education Lecture 5 - Dr. Arshad Bashir