People living in equatorial countries have a darker skin tone than others. what would be the reason for this change in skin tone

Anurse is in the dining room and overhears a new nurse tell a client with body dysmorphic disorder that she's much too thin and must eat more before she can go home. the client bursts into tears and runs out of the dining room. what is the best way for the nurse to address this situation?

Abacteriophage typically attaches to the bacterium and then

Someone with these questions! pls 30 pts