Is food a limiting factor for plants?

In the natural world, limiting factors like the availability of food, water, shelter and space can change animal and plant populations. ... Some changes may cause a population to increase. If there are more plants than usual in an area, populations of animals that eat that plant may increase.

Iwould say overuse ( but not 100% sure ) in the u.s. we tend to overuse water by leaving it running, throwing it away, taking long showers, etc.