Final answer:
Fire helps matter cycle through the biotic and abiotic parts of an ecosystem by releasing nutrients back into the soil.
Step-by-step explanation:
Fire plays a crucial role in the biogeochemical cycles of ecosystems. When a fire occurs, it releases stored organic matter in the form of dead plants and trees. The burning of these materials releases nutrients, such as nitrogen, back into the soil. This nutrient-rich soil then promotes the growth of new plants, enabling the matter to cycle between the biotic and abiotic components of the ecosystem.