Class Seven Geography Inside Our Earth Short Long Questions

rock

The things you see and touch round you’re made up of a combination of minerals. People use a huge variety of minerals in their everyday lives. Scientists estimate that people in the United States use about three trillion tons of minerals every year. This is about 10 tons of minerals yearly for each American citizen. Granite is the only natural stone countertop that’s made of igneous rock.

The use of rock has had a big impact on the cultural and technological growth of the human race. Rock has been used by people and different hominids for no less than 2.5 million years. Lithic know-how marks some of the oldest and repeatedly used applied sciences. The mining of rock for its metal content material has been one of the essential elements of human advancement, and has progressed at completely different rates somewhere else, in part due to the sort of metals … Read More