That would be called a source or head water
Answer:
i think b i not 100%
Explanation:
im going to try c on my test
C) Eutrophication is the answer
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During a dehydration reaction, two monomer molecules are covalently bonded to each other, with the loss of a water molecule. In this reaction, each monomer contributes part of the water molecule that is released during the reaction. This reaction is repeated as monomers are added to the chain one by one, making a polymer.