A wildfire , bushfire , wildland fire or rural fire is an unplanned, unwanted, uncontrolled fire in an area of combustible vegetation starting in rural areas and urban areas. Fossil charcoal indicates that wildfires began soon after the appearance of terrestrial plants million years ago. Wildfires can be characterized in terms of the cause of ignition, their physical properties, the combustible material present, and the effect of weather on the fire. High-severity wildfire creates complex early seral forest habitat also called "snag forest habitat" , which often has higher species richness and diversity than an unburned old forest.
Essay about Asthma
Asthma Essay | Bartleby
This thesis focuses on some of the limitations and difficulties that exist when it comes to quantifying the human health effects that arise as a result of air pollution exposure. The following four issues are particularly analysed and discussed: 1 The measurement techniques used for carbonaceous particles and their lack of consistency; 2 Do the health risks associated with exposure to PM 10 depend on the content of elemental carbon in the aerosol? The method that has been used is largely based on empirical data analysis, where further statistical processing has been used in order to clarify the scientific issues. We hope that these findings will be useful from a policy point of view. Introducing a more consistent measurement technique for soot particles would be beneficial in assessing the health effects related to exposure to these particles.
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