Across
- 4. Kingdom of Living things.
- 6. movement of particles from an area of higher concentration to an area of lower concentration.
- 7. simple type of diffusion
- 8. tiny hair like structure.
Down
- 1. The central core of atom.
- 2. largest group of organism that share traits in common.
- 3. cell structure that performs specific functions.
- 5. Group of one or more kinds of specialized cells that perform the same function.