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levels of organizing
| Term | Definition |
|---|---|
| atom | oxygen atom |
| molecule | H₂O |
| macromolecules | DNA |
| organelles | mitochondria |
| cell | plant cell |
| prokaryotes | eubacteria |
| eukaryotes | animal cell |
| tissue | skin tissue |
| organ | skin |
| organ system | integumentary system |
| organisms | humans |
| population | pine tree population |
| community | forest community |
| ecosystem | coastal ecosystem |
| biosphere | planet Earth |