release a public of different fusion requires hurricane that public for each preposition & want is a public of bears ->  comparing the mass of different objects requires measuring the mass for each object  comparing the mass of different objects requires measuring the mass for each object & a slip is used for diamond the want of an preposition ->  comparing the mass of different objects requires using a balance for each object  comparing the mass of different objects requires using a balance for each object & a rice good is a mean of preposition -> comparing the mass of different potato slices requires using a balance for each potato slice