What are good strategies to deal with people around you who are negative?

Which of the following is not a part of the integumentary system

Catalina ate a candy bar and then went on a fast-moving ride in an amusement park. she was sick to her stomach after the ride and now, catalina cannot eat candy bars, because they make her nauseous. in this learned association, the candy bar serves as a(n) to catalina.

To avoid food poisoning, perishable items should not be stored in the refrigerator for more than days.