Across
- 3. introduction of harmful materials into the environment.
- 5. no longer existing.
- 9. able to produce crops or sustain agriculture.
- 10. conditions that surround and influence an organism or community.
- 11. environment where an organism lives throughout the year or for shorter periods of time.
- 12. able to be continued at the same rate for a long period of time.
- 14. gradual changes in all the interconnected weather elements on our planet.
- 17. to decay or break down.
- 18. all the different kinds of living organisms within a given area.
- 19. the art and science of cultivating the land for growing crops (farming) or raising livestock (ranching).
- 22. animal that hunts other animals for food.
- 23. ecosystem with large, flat areas of grasses.
- 25. part of DNA that is the basic unit of heredity.
Down
- 1. to adjust to new surroundings or a new situation.
- 2. to transfer pollen from one part of a flower (the anther) to another (the stigma).
- 4. to harvest aquatic life to the point where species become rare in the area.
- 6. to capture and kill enough animals to reduce their breeding population below sustainable levels.
- 7. to produce offspring.
- 8. differences in the genes among individual members of a species.
- 13. to save or use wisely.
- 15. agricultural produce.
- 16. community and interactions of living and nonliving things in an area.
- 20. growth of abnormal cells in the body.
- 21. imaginary line around the Earth, another planet, or star running east-west, 0 degrees latitude.
- 24. area of land that receives no more than 25 centimeters (10 inches) of precipitation a year.