Answer:
Was concerned because the potential for mouth to hand contamination
Explanation:
As one of the server does multiple tasks of wrapping the tableware, setting the napkins, opening the door as well as taking lunch breaks, hence he is at a high risk of carrying or spreading microorganisms with him. By multitasking and then eventually taking lunch in between he is at a high risk of hand to mouth infectious microorganisms transfer which can be fatal for him as well as other people.
Lemon Juice to prevent oxidation in kitchens.
Inertia is the opposing of gravity so...
Answer: Those parts is were all the oxygen is distributed through the human body, and so technically it can be considered the respiratory system.