<?xml version="1.0" encoding="utf-8"?><!DOCTYPE Zthes SYSTEM "http://zthes.z3950.org/schema/zthes-1.0.dtd">  <Zthes><term><termId>2042</termId><termName>OXÍGENO</termName><termType>TT</termType><termLanguage>es</termLanguage><termVocabulary>Tesauro Ambiental de Colombia</termVocabulary>	<termStatus>active</termStatus>	<termApproval>approved</termApproval>	<termSortkey>OXÍGENO</termSortkey><termNote label="Scope"><![CDATA[ Elemento diatómico ( O2 ) más abundante en la corteza terrestre, forma parte de los océanos y del aire y es fundamental en el funcionamiento de la biosfera. ]]></termNote><termCreatedDate>2026-05-25 01:03:53</termCreatedDate><relation><relationType>UF</relationType><termId>246</termId><termName>ATMÓSFERA</termName><termType>ND</termType></relation><relation><relationType>UF</relationType><termId>1556</termId><termName>GASES CONSTANTES</termName><termType>ND</termType></relation><relation><relationType>RT</relationType><termId>132</termId><termName>AIRE</termName><termType>PT</termType></relation></term>  </Zthes>