While there was deliberate intervention by the alliance to stabilize the prices, it also reveals how the human species could exploit the ecological environment.
If one's strength is powerful enough, just by relying on the impact of one's own ecology, one could forcefully radiate and transform a small world, eradicating countless creatures.
Sometimes, when facing a Heavenly Disaster, different Eco-Zones would be used as countermeasures.
Therefore, to master ecology is akin to mastering the power of nature, where destruction and creation are merely a thought away.
The same applies to the Netherworld Ecology, born from the debris left after the death of a Skeleton Angel, thus covering a vast area, where a large amount of Netherworld Water runs, even corroding the surroundings of the skeletal area, resembling an ancient moat.