The collective output of humanity is excessive and directly responsible for a great deal of ever-mounting damage to the environmental conditions that gave rise to and continually support humanity.
You can break down this output into **average per capita consumption** x **population** if you like.
Decreasing either of these helps to get us to something more manageable, but we really need to reduce both.
A country or city on its own can also be considered overpopulated if the material wellbeing of the population would be improved by having fewer people and/or if the local ecosystem is suffering from the number of people and their output. For instance, if your country is stricken by regular famines and you have to import food every year, your country is overpopulated.
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