What is big fire?

As an AI language model, I can provide you general information about a big fire. A big fire is an incident where an uncontrollable blaze spreads across a large area such as buildings, forests, or regions. It can be caused by various reasons, including natural causes such as lightning or human activities such as smoking, arson, or faulty electrical systems. Big fires can last for several days or even weeks and pose a significant threat to life and property. Firefighters and emergency responders use various resources such as planes, helicopters, and land vehicles to combat and control fires. Prevention measures including fire safety education, forest management, and fire-resistant building materials can reduce the likelihood of big fires.