Explanation: Geologists studied and told us that the Earth's crust is composed of various chemicals, minerals, and rock samples. Even the chemicals and minerals are obtained from within the rock samples. Minerals are to rocks such as vegetables are to the salad. These minerals are extracted and processed by geologist and such rock which contains traces of minerals are called ores. </span>
The answer would be B. Japan’s population has been at a steady decrease since as early as the year 2000 and the United States population has been at a steady increase dating back to 1790 from the research I have seen.
