Why isn't dirt listed in the periodic table?
A) The periodic table lists only elements made of one kind of material. Dirt is a mixture of elements and compounds.
B) Elements like dirt and air are so common that there is no need to list them in the periodic table.
C) Dirt IS listed in the periodic table but is not easily recognized because it is listed as one of the rare earths with its old scientific name, dysprosium, symbol Dy.
D) None of the above is true.
A
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Fill in the blank(s) with correct word