In the United States,we use many times greater amounts of rock resources,like sand and gravel,than we do of metals like iron and copper.

Question

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According to the United States Geological Survey (USGS), in 2019, the U.S. produced 970 million metric tons of construction sand and gravel, compared to 50 million metric tons of iron ore and 1.3 million metric tons of copper. Therefore, we use many times greater amounts of rock resources, like sand and gravel, than of metals like iron and copper.

In the United States,we Use Many Times Greater Amounts of Rock