Under very cold conditions, rocks can be shattered by ice and frost. Glaciers may form in permanently cold areas, and these slowly moving masses of ice cut out valleys, carrying with them huge quantities of eroded rock debris. ------
Question이 According to paragraph 6, which of the following is both a cause and result of erosion 인데
저는 A. Glacial activity 했는데 안되나요?? 답은 D인데 A보자 말자 바로 찍어서.. 근데 생각해보니 A도 되는것 같아서 질문올려봅니다.
Erosion 의 result 로 Glacial 이 만들어지고 these slowly moving masses of ice (=glacials) 가 cut out valleys 하니깐 erosion 의 cause 아닌지???