题目内容
which one of the following is to examine the Earth materials and seeks to understand the many processes that operate on our planet?
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The most common silicate group and make up more than 50 percent of Earth’s crust are ______ .
The rock-forming minerals are olivne, pyroxene, ______ , ______ , ______ , the clay minerals, ______ , ______ , and dolomite.
Geology is traditionally divided into two broad areas: ______ , ______ .
Geology is the study of the ______ .
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