The lowest volume level that a person could detect
I'd say everything can be used but only what is needed for particular patient.
Answer:
Yes
Explanation:
Only for help though not for cheating.
Answer:
Global life expectancy is the average age that people live to be. This is not a national life expectancy where we look only at one country and is on a global level. The industrial revolution impacted life expectancy by raising wages, living conditions. New technology was invented and many breakthroughs in sanitation were made.