What is double circulation of blood in humans? Explain widely plz
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The blood comes from heart and passes to the body parts and again comes to heart .
This is double circulation
Eg: All humans, animals
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The human circulatory system has three key components: blood vessels, blood and the heart. 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.
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