Answer :
Methane is a thick substance not allowing it to fill the air and it is also a natural gas, so it would cause no harm.
In this exercise we have to use our knowledge of acid rain, as:
Only methane fires will not produce acid rain since acid rain usually occurs in areas of high population concentration, industries and with high levels of emission of pollutants such as CO2 and methane.
What causes acid rain?
The main consequences of acid rain are: The soil can change when acid rain reaches the surface, becoming acidified. Soil contamination can also cause contamination of water courses, such as rivers and lakes, as well as underground water reserves.
See more about acid rain at brainly.com/question/53991
