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Besides lossy compression methods, lossless formats are a significant alternative to MP3 because they provide unaltered audio content, though with an increased file size compared to lossy compression. Lossless formats include FLAC (Free Lossless Audio Codec), Apple Lossless and many others.
What is a significant alternative to MP3?
A: lossless formats

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Protein digestion occurs in the stomach and duodenum in which 3 main enzymes, pepsin secreted by the stomach and trypsin and chymotrypsin secreted by the pancreas, break down food proteins into polypeptides that are then broken down by various exopeptidases and dipeptidases into amino acids. The digestive enzymes however are mostly secreted as their inactive precursors, the zymogens. For example, trypsin is secreted by pancreas in the form of trypsinogen, which is activated in the duodenum by enterokinase to form trypsin. Trypsin then cleaves proteins to smaller polypeptides.
What are the three main enzymes that break down food?
A: pepsin secreted by the stomach and trypsin and chymotrypsin

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In 20112012, Sony Music Inc. expressed support for SOPA and PIPA. The Stop Online Piracy Act and Protect IP Act stirred up controversy within the entertainment industry since their introduction in the United States Congress.[citation needed]
The Continue Online Piracy Act and Protect IP Act stirred up what?
A: unanswerable

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If all three parameters are used, they are specified in the following form: [frame size][scanning system][frame or field rate] or [frame size]/[frame or field rate][scanning system].[citation needed] Often, frame size or frame rate can be dropped if its value is implied from context. In this case, the remaining numeric parameter is specified first, followed by the scanning system.
When can the frame size or frame rate parameter specification be not dropped?
A:
unanswerable