Across
- 2. the force that pulls things to Earth
- 6. the breaking down of the Earth through weathering
- 10. small stones and sand
- 11. ____ features have been created by people - buildings, roads, playgrounds, statues
- 13. can contribute to over fishing
- 14. ____ features often existed before humans- trees, seas, lakes, rivers, mountains
- 15. another name for pollutants
- 17. all of the living things on Earth
- 18. something observable in science
Down
- 1. Chesapeake Bay is the largest one in America
- 3. the air surrounding the Earth
- 4. all of the land on Earth
- 5. contributes to dirty air, water, and/or land
- 7. a place where animals live
- 8. continued exposure to wind, water, or ice leads to erosion over time
- 9. water ____ occurs when there is more water than the land can absorb.
- 12. all of the water on Earth
- 16. when sediments are placed somewhere by wind or water