1. what considerations are important in a well-planned system for handling
emergency situations?

Ibelieve the answer is d.

Because without physical activity, the body has extra "energy" if you will, and so when it is time for bed you are not tired, so you end up staying up all night. also there is probably an effect on your internal clock, which messes with your melatonin production which goes hand in hand with your sleep cycle

Don't pollution air circulation. wasting pollutionclean in your surroundings

No, when getting the flu vaccine no drugs should be being takin at the time.