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Question 1: Which body part stays the same size from birth? B) Eyes Question 2: What is the function of the spleen? C) Filter blood Question 3: What is the main function of the small intestine? B) Nutrient absorption Question 4: What is the role of the large intestine? A) Absorb water Question 5: Which organ removes carbon dioxide from the blood? B) Lungs Question 6: Which food is rich in vitamin B12? C) Fish Question 7: What is the normal breathing rate for adults? B) 12–20 bpm