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Minerals are substances in rocks that industries use to manufacture products. Unlike plants and animals, minerals are not alive. Most minerals are hard, and many of them have to be dug from under the ground. A practice known as mining is used to bring the minerals from beneath the earth's surface.Some minerals, such as coal, can be used in the form in which they are found. However, most minerals have to be changed in some way before they can be used. Oil is broken down into many valuable products, such as gasoline and natural gas. which sentence tells the main idea of the story? a. Minerals used in industries are mined from beneath the earth. b. Minerals are found in rocks. c. Oil is broken down into gasoline and natural gas. d. Mining is the practice of bringing minerals up from underground.
What is (a) Minerals used in industries are mined from beneath the earth.