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Biology
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Clues in this puzzle
Across
- Muscular organ that pumps blood through the body (5)
- Breathing organ situated within the rib cage (4)
- Molecule that carries genetic information (3)
- Green, flattened structure attached to a stem (4)
Down
- Tube forming part of the blood circulation system (4)
- Main upward stalk of a plant (4)
- Organism such as trees, shrubs, and herbs (5)
- Heredity unit transferred from a parent to offspring (4)
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