A forest fire is an uncontrolled fire in a ____ area. It has an ____ on the environment and can cause damage to ____. They are caused by humans, ____, or volcanic activity. Forest fires are an ____ part of the natural cycle of a forest. They clear ____ dead plants and trees and help new ones to ____. However, powerful forest fires can destroy ____ areas of land and are difficult to control. When a fire starts, it ____ quickly and burns anything in its path. The heat from the fire is so intense that it can kill animals and ____ their habitats. The smoke from forest fires can travel for hundreds of miles and can be ____ for people living nearby. It can also ____ air quality in other areas. Firefighters use different ____ to control and put out forest fires. They may create firebreaks, which are areas with no trees or plants, to stop the fire from ____. They also use airplanes and helicopters to drop water or fire retardant chemicals on the fire. Sometimes they use controlled fires, which are smaller, less ____ fires, to remove the fuel from the main fire. In some rare cases, forest fires can become very large and difficult to control. These are called ____. Wildfires can be dangerous because they spread quickly and can change ____ suddenly. People who live near forests should have a plan in case a wildfire occurs. This plan should include what to do, where to go, and what to take. It's important to remember that forest fires are a ____ part of the environment. While they can be ____, they also play an important role in the life cycle of a forest.

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