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What is the normal body temperature of a healthy human in Fahrenheit?
Which organ in the human body is primarily responsible for filtering blood?
What is the pH value of pure water?
Which gas do plants absorb from the atmosphere for photosynthesis?
What is the boiling point of water at sea level in Celsius?
What is the hardest natural substance found on Earth?
What is the unit used to measure atmospheric pressure?
Which human organ is primarily responsible for producing bile?
What causes the greenhouse effect on Earth?
What is the study of heredity called?