* Lightning: Lightning strikes can start wildfires in dry, grassy areas. Lightning is the leading cause of wildfires in the United States.
* Power lines: Power lines can spark wildfires if they come into contact with dry vegetation. Power lines are the second leading cause of wildfires in the United States.
* Burning trash: Burning trash is another common cause of wildfires. Burning trash can release sparks or embers that can ignite dry vegetation.
* Campfires: Campfires that are not properly extinguished can start wildfires.
* Cigarettes: Cigarettes that are not properly extinguished can start wildfires.
* Arson: Some wildfires are started intentionally by people.
Wildfires can also start from other sources, such as:
* Volcanic eruptions: Volcanic eruptions can release hot lava and ash that can start wildfires.
* Earthquakes: Earthquakes can cause power lines to break and fall, which can spark wildfires.
* Meteorites: Meteorites can land on Earth and start wildfires.
Wildfires are a serious threat to life and property. They can cause extensive damage to homes, businesses, and forests. Wildfires can also lead to the loss of human life.