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<p>of humus enables it to moderate, i.e. buffer, excessive <a href="page.php?w=Soil_pH">acidic</a> or <a href="page.php?w=Alkali_soil">alkaline</a> soil conditions.<br/>
* During humification, microbes secrete sticky, gum-like <a href="page.php?w=mucilage">mucilage</a>s; these contribute to the crumby structure (<a href="page.php?w=tilth">tilth</a>) of the soil by adhering particles together and allowing greater <a href="page.php?w=Aeration">aeration</a> of the soil. Toxic substances such as <a href="page.php?w=Heavy_metal_%28chemistry%29">heavy metals</a></p><p>
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