Explain the role of biodegradable substances in maintaining ecological balance.

Biodegradable substances play a vital role in maintaining ecological balance by supporting natural decomposition and nutrient recycling processes.

These substances, such as food waste, plant materials, and paper, are broken down by microorganisms into simpler inorganic nutrients. This process returns essential elements like nitrogen, carbon, and phosphorus back to the soil, making them available for plant growth.

Biodegradable materials also help in reducing environmental pollution, as they do not accumulate in the environment like non-biodegradable substances. Instead, they are naturally recycled through decomposition.

Their breakdown contributes to the formation of humus, which improves soil fertility, structure, and water retention capacity.

By participating in natural cycles and supporting soil health, biodegradable substances ensure the stability and sustainability of ecosystems.