To understand the influence of fluid CO_2 on ultramafic rock-hosted seafloor hydrothermal systems on the early Earth,we monitored the reaction between San Carlo
Based on the literature review about autonomous learning,the study put forward four steps for using TED to enhance student autonomous learning,which are prepara
Bioko Island(3008 m a.s.l) is located in the presently more active volcanic zone of the Cameroon Line and composed essentially of alkaline basalts and hawaiites