review
Across
- 1. area of ocean that receives plenty of light
- 4. green organelle
- 5. other scientists check your work
- 6. the first species to populate bare rock
- 9. stomach of the cell
- 10. distribution pattern of herds
- 11. the pine forests
Down
- 2. curve of unchecked growth
- 3. proteins in the membrane that bring molecules in
- 5. make up most of the membrane
- 7. bean shapes organelle
- 8. spins around to separate mixtures