Forest fires are another another natural occurance of the element fire! They occur in wildland areas and are uncontrolled. But they often spread and destroy agricultural resources and housing. They are commonly started by lighting, careless human activity, volcanic eruptions and arson. Droughts and heat waves can severly increase the chances of wildfires occuring.
In modern times it is accepted that they are a natural occurance of the ecosystem. Some plants have even evolved to survive fires, thanks to wildfires. Also the germinataion of seeds are stimulated by smoke, heat and charred wood, all components of wildfires.
But alot of ecosystems are suffering from too much forest fires!
I got this image from www.lpi.usra.edu/.../wildfiresweb.html
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