Question

(ii) Write a letter in about 100 words to your mother telling her how you enjoyed your educational trip to Pathani Samanta Planetarium and Science Park, Bhubaneswar.​

Answer 1

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Each alveolus is cup-shaped with very thin walls. It's surrounded by networks of blood vessels called capillaries that also have thin walls. The oxygen you breathe in diffuses through the alveoli and the capillaries into the blood.

Answer 2

Answer:

Blood gets its bright red color when hemoglobin picks up oxygen in the lungs . As the blood travel through the body, the hemoglobin releases oxygen to the different body parts.

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