<p style="text-align:left;"><span style="font-family:'굴림';font-size:12px;">남극의 빙하를 드릴로 판 후 산소의 동위원소인 </span><span style="font-family:gulim, dotum, helvetica, applegothic, sans-serif;vertical-align:top;padding-left:2px;color:#333333;text-align:justify;"><sup style="color:#000000;line-height:1em;"><span style="font-family:'굴림';"></span></sup><span style="color:#2f2f2f;"><span style="font-family:'굴림';"></span></span></span><sup style="font-family:gulim, dotum, helvetica, applegothic, sans-serif;line-height:1em;"><span style="font-family:'굴림';font-size:9px;">16</span></sup><span style="font-family:gulim, dotum, helvetica, applegothic, sans-serif;text-align:justify;color:#2f2f2f;"><span style="font-family:'굴림';font-size:12px;">O와 </span></span><sup style="font-family:gulim, dotum, helvetica, applegothic, sans-serif;line-height:1em;"><span style="font-family:'굴림';font-size:9px;">18</span></sup><span style="font-family:gulim, dotum, helvetica, applegothic, sans-serif;text-align:justify;color:#2f2f2f;"><span style="font-family:'굴림';font-size:12px;">O</span></span><span style="font-family:'굴림';font-size:12px;">의 </span><span style="font-family:'굴림';font-size:12px;">비율을 조사해서 지구의 과거 기온을 추정한다고 하는데요.</span></p> <p> </p> <p><span style="font-family:'굴림';font-size:12px;">지구기온이 올라가면 바다에서 가벼운 </span><span style="color:#202122;background-color:#ffffff;font-family:'굴림';font-size:12px;">H</span><sub style="line-height:1em;color:#202122;background-color:#ffffff;"><span style="font-family:'굴림';font-size:9px;">2</span></sub><sup style="line-height:1em;"><span style="font-family:'굴림';font-size:9px;">16</span></sup><span style="color:#2f2f2f;font-size:14px;text-align:justify;font-family:'굴림';"><span style="font-size:12px;">O보다 무거운 </span></span><span style="color:#202122;background-color:#ffffff;font-family:'굴림';font-size:12px;">H</span><sub style="font-family:gulim, Dotum, Helvetica, AppleGothic, sans-serif;line-height:1em;color:#202122;background-color:#ffffff;"><span style="font-family:'굴림';font-size:9px;">2</span></sub><sup style="font-family:gulim, Dotum, Helvetica, AppleGothic, sans-serif;line-height:1em;"><span style="font-family:'굴림';font-size:9px;">18</span></sup><span style="color:#2f2f2f;font-size:14px;text-align:justify;font-family:'굴림';"><span style="font-size:12px;">O</span></span><span style="color:#2f2f2f;font-size:14px;text-align:justify;font-family:'굴림';"><span style="font-size:12px;">가 증발하는 비율이 늘어난다는데, 제 생각으로는 가벼운 분자가 먼저 증발할 것 같아서요. 원래 무거운 기체가 먼저 증발하나요?</span></span></p>
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