What does it mean when two shapes are similar

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.

What is the social order of the ancient river valley civilization of mesopotamia?

Compare and contrast the methods of argument that pertelote and chanticleer use to defend their interpretation of dreams. what is false about each of their arguments?