Honestly I think positivity is a better way to get your workers to act better or a certain way. I would offer incentives for things such as you get a paid break every couple of positive reviews an employee receives. You could also do like a employee chart that grades employees on how polite they are and you could say like the top 3 get treated to lunch. This would be positive because it benefits not only the employee by giving them rewards but it fixes the problem by persuading the employees to be polite to the customers. I could give you some negatives but as personally working in the work world positivity works way better and goes farther. Good luck and I hope this helps!
Radiation would be mostly likely used for cancer
Exercise, identify what the problem is that’s causing you to be depressed
It is the aorta. It is the biggest and the main artery
The answer is Water, that's what is vital to the body. The body can survive on just water for a long time