阅读短文, 在未给提示词的空白处仅填写一个适当的单词, 在给出提示词的空白处用括号内所给的词的正确形式填空。

As volcanologist, I often travel to unusual places. Collecting information about active volcanoes for a database is my job, 【小题1】 helps scientists predict where lava from the volcano will flow next and how fast so as to protect ordinary people. 【小题2】 (unfortunate), we cannot move their homes out of the way. Having studied volcanoes for many years, I am now still amazed at their beauty as well as their potential for 【小题3】 (cause) great damage.