What is one major health behavior that you should change?

answer; the correct answer is medical care service field;

well when looking at this if you think about it   negativley and positivley   react with each other and when the first layer gets full they add layers it starts with 2 on the first layer and it constantly goes on until the official number is there

the second awnser

explanation:

because it is for complex problems

answer; monaxial;