Polymerization is the method of creating a synthetic polymer by combining many small monomer molecules into chain held together by covalent bonds. There are two major forms of polymerization, step growth polymerization, and chain growth polymerization. 1  The main difference between the two types of polymerization is that in chain growth polymerization, monomer molecules are added to the chain one at a time.
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Earthjustice is a non-profit public interest law organization based in the United States dedicated to environmental issues. It is headquartered in San Francisco, has nine regional offices across the United States, an international department, a communications team, and a policy team in Washington, DC.[citation needed]