Lesson on Blood Circulation - Biology 4th Grade | Children's Biology Books. Baby Professor
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      Lesson on Blood Circulation

      Biology 4th Grade

      Children’s Biology Books

      Speedy Publishing LLC

      40 E. Main St. #1156

      Newark, DE 19711

      www.speedypublishing.com

      Copyright 2016

      All Rights reserved. No part of this book may be reproduced or used in any way or form or by any means whether electronic or mechanical, this means that you cannot record or photocopy any material ideas or tips that are provided in this book

      Have you ever wondered how blood travels through your body?

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      Blood can be compared to a car’s engine oil. The oil keeps the engine clean and allows the car to run smoothly. That’s what makes oil essential for cars, trucks, and buses.

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      Blood, on the other hand, carries essential oxygen and nutrients to our cells. It also removes the waste products from our cells to keep them clean.

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      Now we know the importance of blood in our body. But how does blood circulate into our body? The vital organ that’s responsible for this is the HEART.

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      The heart is part of the human body’s circulatory system. It’s what keeps us alive. If it fails to pump blood, then all else fails.

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