Which statement is the best decription of how blood circulates through the body? A. The circulatory system pushes blood upward throughout the body
by using gravity

B. The heart contracts and relaxes causing a force to push the blood
throughout the body.

C. The respiratory system pulls the blood inward when inhaling and
pushes it outward when exhailing.

D. The blood circulates throughout the body by gravity only.

Click an item in the list or group of pictures at the bottom of the problem and, holding the button down, drag it into the correct position in the answer box. release your mouse button when the item is place. if you change your mind, drag the item to the trashcan. click the trashcan to clear all your answers. show the flow of energy in the following ecosystem by labeling each organism's link in the food chain. click once to select a label. click again to place the label in the correct location.