tell me about a time you exceeded the expectations of someone by anticipating their needs. describe the situation, your actions, and the outcome.

When does a metropolitan area become a megalopolis?

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.

Rock concerts musical instruments cell phones and contact lenses are just a few things that are possible because of