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Q: What gas do plants absorb from the atmosphere? A: Carbon dioxide Q: What is the chemical symbol for water? A: H₂O Q: What is the most abundant element in th universe? A: Hydrogen Q: What force keeps us grounded on Earth? A: Gravity Q: What organ in the human body is primarily responsible for pumping blood? A: Heart Q: What is the largest planet in our solar system? A: Jupiter Q: What is the hardest natural substance on Earth? A: Diamond Q: What element is essential for the production of red blood cells? A: Iron Q: What process do plants use to make their food? A: Photosynthesis Q: What is the boiling point of water at sea level in Celsius? A: 100°C Q: Which vitamin is produced when a person is exposed to sunlight? A: Vitamin D Q: What type of energy is stored in a stretched rubber band? A: Potential energy Q: What is the study of life called? A: Biology Q: What is the basic unit of life? A: Cell Q: What is the speed of light in a vacuum? A: Approximately 299,792,458 meters per second Q: Who formulated the three laws of motion? A: Sir Isaac Newton Q: What is the unit of electrical resistance? A: Ohm Q: What phenomenon explains the bending of light when it passes through different mediums? A: Refraction Q: What is the first law of thermodynamics? A: Energy cannot be created or destroyed, only transferred or changed in form. Q: What particle carries a positive charge? A: Proton Q: What is the term for materials that do not conduct electricity? A: Insulators Q: What is the formula for calculating force? A: Force = Mass × Acceleration (F = ma) Q: What is the SI unit of power? A: Watt Q: What is the phenomenon where two waves superimpose to form a resultant wave? A: Interference Q: What is the term for the resistance of any physical object to a change in its state of motion or rest? A: Inertia Q: Who is known for the theory of relativity? A: Albert Einstein Q: What is the study of motion without considering its causes? A: Kinematics Q: What is the effect where a wave changes direction because of an obstacle? A: Diffraction Q: What is the process by which unstable atomic nuclei lose energy by emitting radiation? A: Radioactive decay

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