Title rated 4 out of 5 stars, based on 13 ratings(13 ratings)
Book, 2010
Current format, Book, 2010, , Available .
Book, 2010
Current format, Book, 2010, , Available . Offered in 0 more formats
Your hardworking heart started beating eight months before you were born and continues to beat about one hundred thousand times a day. "By the time you're seventy years old, it will have beaten about 2.5 billion times." Find out the story behind each beat on a journey through the body's circulatory system. Your hardworking heart started beating eight months before you were born and continues to beat about one hundred thousand times a day. "By the time you're seventy years old, it will have beaten about 2.5 billion times." Find out the story behind each beat on a journey through the body's circulatory system.
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