Why is"decomposition" a good name for these types of reactions?

Gwhich r group would most likely be found in a hydrophobic area of the tertiary structure of a globular protein? which r group would most likely be found in a hydrophobic area of the tertiary structure of a globular protein? −ch2−oh −ch2−o||c−nh2 −ch2−coo− −ch2−ch2−ch2−ch2−n+h3

Avariable that is not being directly tested during an experiment should be changed varied experimented controlled

Is 9 correct? and can someone me with 10? it’s due tomorrow, you