<?xml version="1.0" encoding="utf-8"?><!DOCTYPE Zthes SYSTEM "http://zthes.z3950.org/xml/zthes-05.dtd">  <Zthes><term><termId>31341495</termId><termName>biodegradation</termName><termType>PT</termType><termNote><![CDATA[ Biologically mediated deterioration that includes molecular changes to a material such that characteristic properties of the material are no longer evident. For loss of utilitarian or physical characteristics of a material caused by bacteria or other microorganisms, use 'biodeterioration.' ]]></termNote><termCreatedDate>2026-03-30 20:32:05</termCreatedDate><relation><relationType>UF</relationType><termId>31341496</termId><termName>biodegraded</termName><termType>ND</termType></relation><relation><relationType>UF</relationType><termId>31341497</termId><termName>biological degradation</termName><termType>ND</termType></relation><relation><relationType>UF</relationType><termId>31341498</termId><termName>degradation, biological</termName><termType>ND</termType></relation><relation><relationType>BT</relationType><termId>31317732</termId><termName>degradation</termName><termType>PT</termType></relation><relation><relationType>RT</relationType><termId>31317727</termId><termName>biodeterioration</termName><termType>PT</termType></relation></term>  </Zthes>