Antarctica is surrounded by the ocean

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.

75 points!me! imagine that you are a reporter for your hometown paper during the civil war. you are writing about any one of the major battles of the civil war. in two to three paragraphs, explain what strategies the commanders are using, who wins the battle, and why. don't copy and paste the answer from the other question just like this on this site.

Because of the amount of precipitation it receives, most of populated australia can be considered a) alpine. b) piedmont. c) semi-arid. d) tropical rainforest.