In how many cells are the functions of unicellular organisms performed ? A. 1 cell B. 2 cells C. 3 cells D.4 cells

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.

Prices for products became more affordable as a result of new forms of ,witch got things to market faster and cheaper

What refers to the existence of more than one level of government in the country