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What is the term for animals without a backbone?
Which sense organ is responsible for detecting sound?
Which acid is found in the human stomach?
What is the chemical formula for table salt?
What is the primary function of the respiratory system?
Which gland is known as the master gland of the human body?
Which planet has the most moons in our solar system?
What causes tides in the ocean?
What is the name of the process by which plants lose water through their leaves?
Which part of the digestive system absorbs most nutrients?