The Environmental Relationships of Transportation Systems The Environmental Relationships of Transportation Systems Source: adapted and expanded from CEMT, 1990. There are a number of relationships between the atmosphere, the hydrosphere, the lithosphere, and the ecosphere, and some noted impacts. Share this: Click to share on LinkedIn (Opens in new window) LinkedIn Click to share on X (Opens in new window) X Click to share on Facebook (Opens in new window) Facebook Click to share on Reddit (Opens in new window) Reddit