Answer:
Because soil analysis can indicate the existence of flammable substances. Which indicates that the fire was caused by someone in a criminal manner.
Explanation:
As we know, the soil represents the surface layer of the earth where the plants are fixed and remove the nutrients they need to survive.
The soil is formed through the weathering of the rocks having the minerals that its original rock has. The soil has no flammable substance, as it is basically made up of sand, clay and silt. In addition, the soil is a porous environment, which allows any liquid released onto it to infiltrate at a considerable speed.
For this reason in the investigation of a criminal fire, the analysis of soil samples can be very useful. This is because soil analysis can indicate the presence of some flammable substance that has infiltrated. This can confirm that the fire was provoked and was criminal.
