Across
- 5. weak attraction between polar molecules
- 6. reproductive organ of plants
- 7. source of variation
- 9. process that provides energy in ecosystems
- 13. product of photosynthesis
- 14. Darwin's mechanism for evolution
Down
- 1. quick energy
- 2. one species in an area
- 3. model used to show ecosystem interactions
- 4. causes build up of lactic acid
- 6. process that makes a nutrient usable (nitrogen)
- 8. an organisms place in an energy pyramid
- 10. factors that are non-living in an ecosystem
- 11. type of tissue used for support in plants
- 12. monomers of proteins