Across
- 1. A biome of large, boggy, barren areas without trees.
- 2. reef A coral reef that forms to protect a lagoon or coatlinefrom the ocean.
- 3. The direction a slope faces.
- 4. Molten rockthat reaches the earth's surface.
- 5. Molten rock that is baneath the surface of a planet.
- 6. Earth's metallic centre.
- 7. Algae the grow in the tentacles of the coral polpy.
- 9. The layer between the Earth's crust and core.
- 12. permanently frozen subsoil.
Down
- 1. seasonal movement up and down mountains to graze animals.
- 2. The variety of all living things.
- 7. Very tiny, drifting animals such as shrimp and small fish.
- 8. A chaine or cluster of islands.
- 10. ice Floating blocks of ice that have been driven together to form a large sheet of ice.
- 11. A mountain formed by an eruption of material through the Earth's crust.