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.
By being in the same area or Causing weathering at the same time or place
Answer:
False
Explanation:
It is reckoned to be devoid of matter. Air is matter and a vacuum contains none
