Forest Fire

"Today it is accepted that wildfires are a natural part of the ecosystem of wildlands, where plants have evolved to survive fires by a variety of strategies (from possessing reserve shoots that sprout after a fire, to fire-resistant seeds), or even encourage fire (for example eucalypts contain flammable oils in their leaves) as a way to eliminate competition from less fire-tolerant species. In 2004, researchers discovered that exposure to smoke from burning plants actually promotes germination in other types of plants by inducing the production of the orange butenolide. Most native animals, too, are adept at surviving wildfires."

-Wikipedia 

yes, but is very dangerous, in my opinion…

Dangerous as it may be, it's not something that destroys nature, because as finrod pointed out, fire is actually a part of nature. How can nature destroy itself?

but when is a man that cause it…..it isn't so natural!

Humans aren't natural?

we have different opinion...