Your reading in Mayer also covers these concepts. Global change Global change includes far more than just climate change. Global change includes a variety of issues that are mainly caused by a humans and their activities.
Question is, do humans impact global dynamics and, if so, how.
Most of this increase occurs in the less developed countries, who are likely to increase their resource use. These parameters do interact with each other and are not separate from each other. The point being that many factors are connected to each other, interact and may have unpredictable consequences. Let s look at these factors one at a time. No land is pristine and beyond human impact - human alteration of the biochemical cycles can affect all the global ecosystems.