Small molecules are combined to form larger ones which can eventually form a

POLYMER

Explanation:

Small molecules called monomers combine together in a process called polymerization to form a larger molecule called POLYMER. A polymer is a large molecule consisting of long chains of small molecules (monomers) chemically bonded together.

The process of polymerization often involves the loss of water molecule. These polymers (macromolecules) are important for the optimal functioning of living systems, or the production of important substances.

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