<?xml version="1.0" encoding="utf-8"?><!DOCTYPE Zthes SYSTEM "http://zthes.z3950.org/xml/zthes-05.dtd">  <Zthes><term><termId>31375601</termId><termName>ozone hole</termName><termType>PT</termType><termNote><![CDATA[ Region of the ozone layer in which the ozone concentration is substantially depleted, occurring chiefly at high latitudes and attributed to the chemical action of CFCs and other atmospheric pollutants. ]]></termNote><termCreatedDate>2026-03-30 20:41:19</termCreatedDate><relation><relationType>BT</relationType><termId>31344928</termId><termName>ozone layer</termName><termType>PT</termType></relation><relation><relationType>RT</relationType><termId>31297751</termId><termName>ozone depletion</termName><termType>PT</termType></relation></term>  </Zthes>