Write a note on microbial degradation of refuse in landfills.

Microbial degradation of refuse in landfills is a crucial natural process that involves the breakdown of organic waste by microorganisms, primarily bacteria, fungi, and actinomycetes. This process plays a vital role in waste management, especially in landfills where large quantities of refuse, including food scraps, paper, and other biodegradable materials, are deposited. Over time, microbes decompose these organic materials into simpler compounds, contributing to the stabilization of landfill sites and reducing the environmental impact of waste accumulation.

In landfills, refuse is typically compacted and covered with layers of soil to minimize exposure to air and moisture. Despite the seemingly sealed environment, microorganisms are still present and active within the waste mass, although their activity depends on several factors such as temperature, moisture, oxygen availability, and the composition of the waste.

The microbial degradation process begins as the organic waste is exposed to moisture and gradually ______ ________ ___ _______ _______ _________ ___ _______ _______ ______ _______.
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