Science Spiral Puzzle
CLUE (DEFINITION) :
1 A tiny particle of matter that is the smallest piece of an element.
2 The center of an atom.
3 A force that opposes motion.
4 A particle with a negative charge.
5. A particle with a positive charge.
6. The smallest unit of living matter that can function by itself.
7. The cooperative relationship of two different species.
8. A living thing that is composed of one or more cells.
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