quiz of biology for class 10th
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What are the diseases caused due defiance of vitamins?
What should we do to be cured of those diseases?
How many types of circulations of blood are there?
Where is aorta?
Heart is made up of which muscle?
What should we do to be cured of those diseases?
How many types of circulations of blood are there?
Where is aorta?
Heart is made up of which muscle?
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