Final answer:
A cotton ball can be used as a carrier or medium for explosive materials in the context of explosives.
Step-by-step explanation:
A cotton ball can be used in the context of explosives as a carrier or medium for explosive materials. It can be soaked in a flammable liquid, such as kerosene or alcohol, and then ignited to create a small flame. This flame can be used to ignite a larger explosive material, such as gunpowder, providing the initial spark needed for the explosion.
Learn more about Cotton's role in explosive devices