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.
Answer:
A.she will lose weight
Explanation:
It is A because she burns more calories than she eats so she will lose weight because the more she burns, the less nutrients her body loses.
We should increase fat intake
