The formal principle (the form) configures the matter to be a
certain type of matter: a human body if the form is human, an
oak tree if the form is that of an
oak tree, and so on.
The deer really want more
oak trees but three of your humans want you to start building a fast food restaurant - only to get that fast food restaurant running, you have to have farmers growing food and raising cattle, a flour mill running, bakeries baking, a slaughterhouse - and each of these requires a
certain amount of labor (must come from your established community) as well as power and water, which can be generated by solar power, windmills, or oil powered generators.