What did joe Biden father do for work

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.

Which article of the us constitution addresses the issue of interpeting the laws of the united states

Name three things the framers of the constitution did to keep the federal government or any part of it from becoming too powerful.