<?xml version="1.0" encoding="utf-8"?><!DOCTYPE Zthes SYSTEM "http://zthes.z3950.org/xml/zthes-05.dtd">  <Zthes><term><termId>31304842</termId><termName>carbonation</termName><termType>PT</termType><termNote><![CDATA[ Any infusion of carbon dioxide into a liquid. In geology, refers to interaction of dissolved carbon dioxide with minerals, especially limestone, in water; a form of chemical weathering.  ]]></termNote><termCreatedDate>2026-03-30 20:21:59</termCreatedDate><relation><relationType>BT</relationType><termId>31298691</termId><termName>condition changing</termName><termType>PT</termType></relation><relation><relationType>BT</relationType><termId>31317766</termId><termName>weathering</termName><termType>PT</termType></relation></term>  </Zthes>