Wildfires are uncontrolled fires that burn in forests, grasslands, or other natural areas. They can be caused by natural events like lightning or human activities such as campfires and discarded cigarettes. Wildfires can spread quickly, fueled by dry vegetation and strong winds, posing risks to wildlife, homes, and air quality. These fires play a complex role in ecosystems. While they can be destructive, they also help maintain healthy environments by clearing dead plants and promoting new growth. Some species, like sequoias, depend on wildfires for their seeds to germinate, highlighting the dual nature of these natural events.