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24-karat gold is considered to be pure gold. 18-karat gold is considered to be about 75% gold. what is 18-karat gold considered a mixture rather than a pure substance? a) it has a variable composition of other elements and minerals. b) its color is different than pure gold. c) the gold atoms are not arranged in a repeating pattern. d) it can be melted and transformed into a different substance.

Apex q: arturo wants to increase his political participation beyond voting in elections. which action would accomplish this? answers: a. paying taxes b. starting a community cleanup program c. getting a public library card d. canvassing for a political candidate

What caused the settlement of more african americans in the mississippi alluvial plain region than in the ozark mountains point)