Across
- 3. Living in a foreign country
- 5. Leaving a country to stay at another
- 6. Larger population forming a city
- 9. Environment of a living organism
- 11. The amount the population would grow
- 13. Clear cutting a wide area of trees
- 17. Sum of all ecosystems on Earth
- 18. Cleaning energy
- 19. Gases surrounding a planet
- 21. Warming phase of surface waters
- 22. Water draining off to the ocean
- 24. Weather condition in the same area
- 25. Made by greenhouse gases
Down
- 1. takes place when population is low
- 2. Man-made structure underwater
- 4. Number of organisms in the a group
- 7. Cooling of surface ocean waters
- 8. Constrain population from growing
- 10. Ratio of deaths in an area
- 12. Different collectives around Earth
- 14. Chemical substance that pollutes
- 15. gases that are harmful to the ozone
- 16. Able to be decomposed
- 20. Composed of 3 oxygen atoms
- 23. Air pollution that is visible