Across
- 1. soil and rock layers
- 5. a planet
- 6. The sum of all
- 8. in its abundance in the environment; if it is
- 10. intervention
- 11. The layer of gas
- 14. Resource A source or
- 15. is held in place by
- 17. can be used
- 20. then the organisms that need it cannot
- 22. Resource Something that is needed by organisms and is not
- 23. power to
Down
- 2. Process Any natural process that happens to Earth’s surface,
- 3. Water that collects in cracks and pores in
- 4. matter on
- 7. of energy
- 9. Resources Resources that exist in the environment without
- 12. Replaceable by natural means in a short period of
- 13. people’s
- 16. Not replaceable by natural means within a short
- 18. of time
- 19. as weathering, erosion, or plate tectonics
- 21. generate