1. DNA evidence analysis is an imperfect science. Provide two reasons why this may be the case.

Pepsin is an enzyme in the stomach that breaks polypeptides into amino acids. pepsin functions best at a ph of around 1.5. what would be the most likely result if the ph of the stomach were increased to 5

All phases of matter may have a fixed mass

Draw a simple labelled diagram if a collenchyma tissue