badir
badir badir
  • 01-11-2020
  • Chemistry
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Use the diagram to answer the question.

Use the diagram to answer the question class=

Respuesta :

Catsceard
Catsceard Catsceard
  • 01-11-2020

Answer:

B. Heart valves allow the blood to flow in only one direction so the blood does not backflow.

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