What is forest fire? what is its effect on environment?
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Explanation:

Wildfire, also called forest, bush or vegetation fire, can be described as any uncontrolled and non-prescribed combustion or burning of plants in a natural setting such as a forest, grassland, brush land or tundra, which consumes the natural fuels and spreads based on environmental conditions (e.g., wind, topography).

Wildfires can have immediate and long term effects on the quality of rivers, lakes, and streams. The most noticeable impact of wildfires is stormwater runoff. After the loss of vegetation, the ground’s soil becomes hydrophobic and prevents the absorption of water. This inability to absorb water promotes the transportation of debris and sediment into larger bodies of water, further polluting valuable and essential resources. Post-fire flash floods become a threat and allow the introduction of heavy metals from ash and soil to infiltrate waterways. Filtering these water sources can be costly as well as time consuming.

Depending on the temperature and time of year a wildfire occurs, vegetation can be significantly impacted. Plants on the forest floor or smaller trees are often destroyed by wildfires, while larger trees are able to survive as long as the fire does not spread into the tree canopy. The flames from these fires destroy the food source and homes of many animals, threatening their survival. For plants and trees that can survive the flames, they are susceptible to disease, fungus, and insects due to their decreased resistance following burn injuries.

Wildfires have both immediate and long-term impacts on air quality. As a forest burns, large amounts of smoke are released into the atmosphere. These smoke particles are typically small and made up of gases and water vapor. Air pollution from fires have the potential to travel great distances and oftentimes may pose a threat to human health. These small particles can become lodged deep within our lungs, making it difficult to breath as well as placing additional stress on our hearts. Additionally, wildfires produce an increased amount of carbon monoxide, which too can lead to a variety of health implications