Across
- 3. climate resistant spores
- 4. consisting of one cell
- 6. use of sunlight to produce energy
- 8. motile filament of cells formed by cyanobacteria
- 10. organisms lacking membrane bound nucleus
- 11. usually found in this type of environment
Down
- 1. byproduct of photosynthesis
- 2. nitrogen-fixing cells
- 5. interaction between organisms where one lives in another
- 7. internal membrane structures for photosynthesis
- 9. used as a dietary supplement