As local ecosystems develop, all forms of life become suited to support each other in a delicate balance. There is no waste in the system and there are controls in place to keep things in check. However, as invasive species disrupt such systems, there are no checks in place to control them, and the whole system is put in danger. Where natural vegetation is well established and protected, though, these invasive species do not succeed. In addition, the natural vegetation is adapted to climate conditions and require no artificial watering and they also help to keep soil in place by preventing erosion.
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