Across
- 4. thorough nourishment of offspring
- 5. ______capacity
- 8. _______ cells
- 10. el _____ southern oscillation
- 11. the shapes an environment can take
- 12. fetal birth
- 14. "originating from human activity"
- 17. dynamic species
- 19. a combination of silt, sand, and clay
- 20. natural drainage system
Down
- 1. egg-laying mammal
- 2. number of individuals in an area
- 3. body of groundwater
- 4. second highest taxonomic rank
- 6. _______ change
- 7. weathering with movement
- 9. the _________ cycle is the only with no involvement from the atmosphere
- 11. whitening of corals
- 13. the ground in which plants grow
- 15. cover 75% of the earth's surface
- 16. watershed product
- 18. _____ winds
- 21. tropical grassland