Science Definitions Beginner Quiz 1

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Practice Pronunciation (Merriam-Webster)
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Beginner Quiz 1
1. What is the process by which plants make their own food using sunlight?
2. What is the center of an atom called?
3. What is the boiling point of water at sea level in Celsius?
4. What force pulls objects toward the center of the Earth?
5. What is the chemical symbol for water?
6. What organ pumps blood throughout the body?
7. What is the largest planet in our solar system?
8. What gas do humans need to breathe in to survive?
9. What is the basic unit of life?
10. What is the main source of energy for the Earth?
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