Thank you for your kind words, though my write-up is just a simple synthesis. It's not even a formal one. A lot of the complex ecological concepts in the environment can actually be explained through physics and chemistry, so I think you'll do well in this field.😊

I think when it comes to the human population, the clash is between Malthusian/Neo-Malthusian point of view vs Curnocopian/Neo-Curnocopian point of view when it comes to resources. Liebig's Law is strictly for resources directly responsible for an organism's growth. But yes, I think some parts of its concept could be adapted to sociology.😇

EDIT: Yes, a species' adaptability to find an alternative resource is also taken into account. Such phenomenon sometimes leads to increased speciation.