Across
- 3. Something that enters a system
- 5. Something that exits a system
- 6. Lines that go north and south
- 7. The layer of gas above the Earth’s surface.
- 8. Celestial bodies that orbit around the sun
- 10. When the sun reaches its mix or min declination
- 12. The study of the earth
- 14. Understanding the natural and social world
- 15. Two systems have the same # inputs as outputs
Down
- 1. Rocks and Earth
- 2. When the sun crosses the celestial equator
- 4. Earth’s bodies of water
- 9. All of Earth’s living things
- 11. Ice bodies on Earth
- 13. Lines that go east and west