The continued upswing not only fuels the debate about the adequacy of future supplies,
it also has enviromentalists distressed over a related issue beyond physical scarcity, that of the capacity of the planet’s geologic, hydrological, and atmospheric systems to handle the wastes associated with mineral extraction for use in manufacturing materials.
The continued upswing은 문맥상 광물소비의 증가 이구요.
하이라이트해놓은 that of 가 누구를 지목하는건지 그리고 문장구조에 대해서 간단히 설명부탁드립니다.
감사합니다.