Answer:
B.
Explanation:
C
The respiratory system works directly with the circulatory system to provide oxygen to the body. Oxygen taken in from the respiratory system moves into blood vessels that then circulate oxygen-rich blood to tissues and cells.
iron
because iron is an metal
Dude i love burritos
im pretty sure the answer is C
your chest cavity is what keeps your heart in one place
your heart is connected to your chest cavity .
A.) joints acts as the fulcrum of a lever to produce movement.
