Question

Large-scale fires can lead to a decrease in atmospheric carbon dioxide.

Answer 1

False.

The phrase should be Large-scale fires can lead to a INCREASE in atmospheric carbon dioxide.

Large-scale fires can exhaust a vast amount of carbon dioxide to the atmosphere which increases the greenhouse effect which has been readily enhanced by man-made structures then contribute to air pollution.

Answer 2

The answer is False.

The toxic gases released during fires are classified into two broad categories, asphyxiant gases such as cyanides, hydrogen sulfide and carbon oxides (carbon monoxide and carbon dioxide) resulting in central nervous system depression and gases. irritants such as chlorine and its derivatives, aldehydes and nitrogen derivatives causing caustic lesions of the respiratory mucosa. In total several hundred, toxic gases have been identified. It is therefore not possible to treat them all in this presentation, so only the most important by their dangerousness will be detailed.

During a fire, the oxygen in the ambient air is consumed by the combustion of the materials. In a confined space like a house or an apartment, its fall can be extremely fast not exceeding a few minutes.