Across
- 2. The lowest layer of Earth's atmosphere
- 3. The theory that pieces of Earth's lithosphere are in constant motion, driven by convection currents in the mantle.
- 6. A type of rock that forms when particles from other rocks or the remains of plants and animals are pressed and cemented together
- 7. The periodic changes in winds and ocean currents, causing cooler and wetter conditions in the southeastern United States and unusually dry weather in southern Africa and Southeast Asia.
- 8. Cells of air circulation occurring between 60 degrees north and south and each pole.
- 10. all of the populations of organisms within a given area
- 11. An ecosystem where all water runoff drains into a single body of water
- 12. Processes by which rock, sand, and soil are broken down and carried away
- 16. The effect of Earth's rotation on the direction of winds and currents.
- 17. the mechanical breakdown of rocks and minerals
- 18. a system of vertical and horizontal air circulation predominating in tropical and subtropical regions and creating major weather patterns.
- 19. The soft layer of the mantle on which the lithosphere floats.
Down
- 1. A type of rock that forms from an existing rock that is changed by heat, pressure, or chemical reactions.
- 4. A rigid layer made up of the uppermost part of the mantle and the crust.
- 5. a species that can live under a wide range of abiotic or biotic conditions
- 9. The second-lowest layer of Earth's atmosphere.
- 10. The process that breaks down rock through chemical changes
- 13. The movement of deep, cold, and nutrient-rich water to the surface
- 14. The shaking that results from the movement of rock beneath Earth's surface.
- 15. a species that is specialized to live in a specific habitat or feed on a small group of species