Across
- 2. terrestrial organisms get water via this process
- 5. used to form nitrogenous compounds
- 6. gaseous exchange in organisms with lungs
- 8. the presence of this is needed for photosynthesis
- 12. dark brown, sticky material found in top soil
- 13. affects soil water, air and mineral ion content
- 15. essential for pollination, seed dispersal and migration
- 18. habitat with water like ponds, lakes and sea
- 20. particle size between 0.02 and 2.0mm
- 21. particle less than .002mm in size
- 22. used for aerobic respiration
Down
- 1. dissolves minerals and essential for photosynthesis
- 3. most organisms can survive in this temperature range
- 4. oxygen in water
- 7. particle size between 0.002 and 0.02mm
- 9. particle size greater than 2.0mm
- 10. affects the rates of transpiration and evaporation
- 11. the drying out of soil organisms without waterproof bodies
- 14. related to the soil
- 16. the concentration of salt in water
- 17. most soil has a slightly ______ pH
- 19. factors affecting terrestrial organisms