Amino acids have a two-carbon bond. One of the carbons is part of a group called the carboxyl group (COO-). A carboxyl group is made up ofone carbon<span> (C) and two oxygen (O) atoms. That carboxyl group has a negative charge, since it is a carboxylic acid (-COOH) that has lost its hydrogen (H) atom.</span>
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Like stones” is used as a simile to compare the children to stones. Stones in this case could be referring to their characters describing them as emotionless people with a lack of feeling. hendikeps2 and 8 more users found this answer helpful.
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A librarian or maybe the internet.
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