Answer:
your heart muscle needs its own supply of blood because, like the rest of your body, it needs oxygen and other nutrients to stay healthy. for this reason you heart pumps oxygen-rich blood to its own muscle through your coronary arteries.
The answer should be
B) physical activity
Based on current research, leptin causes a person to overeat.
Leptin can cause overeating which can lead to obesity or other diseases. The way that it causes overeating is because of the hormone that it gives off, which is the feeling of feeling full.
Bat will eat mosquitoes and other bugs which may carry bad diseases or bacteria (If your talking about Bats the species around kids?)
Answer:
The bend test is a simple and inexpensive qualitative test that can be used to evaluate both the ductility and soundness of a material. It is often used as a quality control test for butt-welded joints, having the advantage of simplicity of both test piece and equipment.
Explanation: