Main Idea Question
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Blood is a miracle liquid. It flows to every part of the body. Some blood cells carry food and oxygen to body organs. Other blood cells kill germs and help stop cuts from bleeding. People can die if they lose a lot of blood or if their blood cells get sick. Doctors sometimes give people fresh blood to save their lives.
What is the main idea of the passage?
What is the main idea of the passage?
- how many blood cells are made by the body
- how important blood is
- why people can die from loss of blood
- why sick people are sometimes given blood