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Students / going / presentation / are / environmental / their / to / protection. / give/ The / on/. the / source / One / sun./ energy / is /most / of / important /of/ the

1.students / going / presentation / are / environmental / their / to / protection. / give/ The / on/
2. the / source / One / sun./ energy / is /most / of / important /of/ the.