Living things obtain and use energy so alive?
<span>All of their skulls were fairly long with sharp teeth.</span>
Answer:
Explanation:
It is called a double circulatory system because blood passes through the heart twice per circuit. The right pump sends deoxygenated blood to the lungs where it becomes oxygenated and returns back to the heart. The left pump sends the newly oxygenated blood around the body.
11w
11(w)
11×w
that a few different ways
