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Question 1 of 314
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🩺 Which organ in the human body is primarily responsible for filtering blood?

Question 2 of 314
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🍎 You leave a sliced apple on a table for an hour. Why does it turn brown?

Question 3 of 314
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📌 Which part of a cell contains most of its genetic material?

Question 4 of 314
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😗 Which scientist developed the theory of general relativity?

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🧪 What is the only metal that is liquid at normal room temperature?

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🤲 Which organ is responsible for exchanging oxygen and carbon dioxide?

Question 7 of 314
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🤓 A shape has five equal sides and five equal angles. What is it called?

Question 8 of 314
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☎️ Who invented the telephone?