What is one inpact the human have on desert biomes

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.

1. describe at least 3 similarities or differences between homo habilis and australopithecus 2. describe at least 3 similarities or differences between cro-magnon and neanderthals.

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