The answer would be D. Inspect the area before diving into it
The heart is the system’s pump and the blood vessels are like the delivery routes and it is a muscle. The pumps are the beat.
The heart is a muscle about the size of a fist and it is the muscle in the body that works the hardest.
The statement that the heart muscle rests only between beats is true.
The answer is c. Voice box.
A. Fish
Fish carries the most bacteria