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...system. This revolutionary idea formed the alternative hypothesis. H0: All planets orbit around the Earth. H1: Not all planets orbit around the Earth. [Planets revolving around the Sun] Figure 2 Solar system The gold standard, a monetary system where the value of a country’s currency is directly linked to gold, was widely adopted in the late 19th and early 20th...

...system of the planet. Using the Google Earth layers, explore some of the features you saw in Video 3: the mid-ocean ridge, and the sections across the Marianas Trench (the deepest known location), the Scotia Sea Trench (a more typical ocean trench) and the section shown in Figure 3. You should investigate and note the depths, gradients and general features you observe. At...