81.   The situation changes if the blocks are composed of two different polymers which, as a pair, can form a miscible blend.

82.   The War Cabinet was composed of Lloyd George, Curzon, Milner, Bonar Law and Henderson.

83.   The bodies of plants and animals are composed of cells and the products of cells.

84.   The nucleus of a cell is composed mainly of nucleoproteins, substances consisting of protein and nucleic acid.

85.   Proteins are molecules composed of chains of amino acids.

86.   The crystal lattice is composed of a basic unit called a unit cell.

87.   All matter is composed of chemical substances.

88.   A compound is a pure substance composed of two or more elements combined in fixed and definite proportions.

89.   The curriculum is composed of three courses taught on a seminar basis and a dissertation.