If a second-degree burn is larger than 2 to 3 inches, which is an appropriate first-aid response?

wrap the burned area loosely in a clean, dry bandage.

elevate the burned area.

submerge the burned area in cold water.

call 911.

The person who utilize the progression principle will keep adding the difficulty of the exercise that he's doing, while the person who does not, will only stay stagnant.  the person that utilize progression principle, will get a stronger endurance because now his body is conditioned to do harsher routines.{the answer was already on verified)

What happens to the influenza virus every 20-40 years and why?