Washing your hands after using the bathroom or before you eat, Disinfect areas like desks after class, don't share personal items, and stay home if you're sick.
Answer:
cart is without oil in engine
The answer is respiratory and circulatory systems.
Your heart is very important. the reason your heart is important because the heart keeps blood that's full of oxygen circulating through your body. the heart is also needed for survival, without one you would be alive today. The heart also sends blood around the body. The blood provides the oxygen and nutrients which is needed.
