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Science
Medium11×1112 words
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Clues in this puzzle
Across
- Smallest unit of matter. (4)
- Cell's control center, or atom's core. (7)
- Scientist's workplace. (3)
- Study of celestial objects. (9)
- Positively charged particle. (6)
- Basic unit of life. (4)
Down
- Unit of heredity. (4)
- Well-substantiated explanation. (6)
- Community of living organisms and their environment. (9)
- Pure substance that cannot be broken down. (7)
- Nerve cell. (6)
- Genetic blueprint, for short. (3)