Ageologist working in a national park finds a mineral. he is carrying a kit that contains a penny, a hand lens, a piece of tile, a geological hammer, and a jackknife. describe how the geologist can use these items to determine some of the materials characteristics.

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Which of the following areas have the highest population density? a) quebecb) united statesc) californiad) new york city

Read the article titled "trans-saharan migration routes to north africa and the eu: historical roots and current trends." why do tens of thousands of sub-saharan africans try to cross the mediterranean each year? how are these refugees commonly portrayed? (site 1)