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Flames of charcoal. A flame (from Latin flamma) is the visible, gaseous part of a fire.It is caused by a highly exothermic chemical reaction made in a thin zone. [1] When flames are hot enough to have ionized gaseous components of sufficient density, they are then considered plasma.
The ability to control fire was a dramatic change in the habits of early humans. [15] Making fire to generate heat and light made it possible for people to cook food, simultaneously increasing the variety and availability of nutrients and reducing disease by killing pathogenic microorganisms in the food. [16]
The Earth core's heat flow—heat leaving the core and flowing into the overlying mantle—is thought to be due to primordial heat, and is estimated at 5–15 TW. [23] Estimates of mantle primordial heat loss range between 7 and 15 TW, which is calculated as the remainder of heat after removal of core heat flow and bulk-Earth radiogenic heat ...
An increase in available nutrients after the fire has passed may result in larger microbial communities than before the fire. [31] The generally greater heat tolerance of bacteria relative to fungi makes it possible for soil microbial population diversity to change following a fire, depending on the severity of the fire, the depth of the ...
While large fires have a major effect on air quality, ecosystems, and the release of planet-warming carbon, it is fast fires that have the greatest impact on infrastructure damage, evacuation ...
Fire impacts plants most directly via heat damage. However, new studies indicate that hydraulic failure kills trees during a fire in addition to fire scorching. High temperature cuts the water supply to the canopy and causes the death of the tree [citation needed].
Climate change promotes the type of weather that makes wildfires more likely. In some areas, an increase of wildfires has been attributed directly to climate change. [11]: 247 Evidence from Earth's past also shows more fire in warmer periods. [74] Climate change increases evapotranspiration. This can cause vegetation and soils to dry out.
Climate change more than doubled the chances of the hot, dry weather that helped fuel the unprecedented wildfire season in eastern Canada that's driven thousands from their homes and blanketed ...