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The earth's oceans are made up of chlorine, and trace elements. a) carbon, oxygen b) oxygen, silicon c) hydrogen, oxygen d) nitrogen, oxygen

All of the following statements about enzymes are correct except: proteolytic enzymes are also known as proteases. pectin methyl esterase causes browning of cut fruit. cloud loss in orange juice is due to enzyme activity. proteolytic enzymes in fish cause tissue softening during storage.

An example of the rapid change in conditions on earth is