Across
- 3. Cycle -. A chain of processes that produce and transform the rock types in the Earth's crust.
- 8. When liquid turns into gas.
- 11. cycle. - The movement of the particles through a substance transporting their heat energy from hotter to cooler areas.
- 12. - The ability to do work.
- 14. The ability to maintain or support a process continuously over time..
- 15. - Any liquid or frozen water that forms in the atmosphere and back to Earth.
- 16. - The connection of different parts of the world.
Down
- 1. - An organism that creates its own food or energy.
- 2. method. The process of objectively establishing through testing and experiments.
- 4. - The study of organisms and how they interact with each other.
- 5. - A process in which deep cold water rises toward the surface.
- 6. energy. Any energy that is created by the sun.
- 7. resources - A substance that is used up more quickly than it can replace itself.
- 9. - The introduction of harmful materials into the environment.
- 10. - A group of people or things with a common characteristic.
- 13. key - A simple tool used to identify a specific object.
