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My Answered Questions

• Is there a way of measuring the size of the universe?

• does tooth enamel grow back and if not, why?

• how was the moon made?

• how are black hole formed

• Do you think there are any more elements to be discovered?

• Why is the sky blue?

• If water is so clear, then why is the sea so dark?

• Can blood ever be a different colour to red?