You should never re-enter a burning building for belongings, animals, or people. Firefighters do that for you.
That can be taken many different ways maybe: they push themselves to hard and don’t know when to take a break or they cant settle down, sleep or, don’t know when to stop.
I think (C):600
Explained: other sources say there is about 650 but if you count the muscles within a complex muscle then about 840
Calcium and phosphorus build strong and flexible bones. A diet lacking these nutrients can lead to osteoporosis.
The psychological feature that arouses an organism to action toward a desired goal hope this helps
