Hanoi jjdndjd hajhx 17 yrs old
Answer:
is part of the cardiovascular system;
pumps blood to the cells in the body works;
closely with the lungs
Explanation:
The heart is a muscle that pumps blood through the blood vessels and that is the essential function. It is the main and central organ of the circulatory system.
The heart weights between 200 and 425 grams. It is located between lungs, in the middle of the chest and it is divided into four chambers in humans, other mammals, and birds heart.
The paramedics will help you by using a breathing machine
Answer:
In the North, ______ were used to keep black and white people apart.
ASocial customs incorrect answer
BState laws incorrect answer
CFederal laws incorrect answer
DCourt orders Explanation:
