Across
- 5. A process in living organisms involving the production of energy through the intake of oxygen.
- 7. Matter or forces entering a natural system.
- 8. A dense evergreen forest with heavy annual rainfall of generally more than 1300mm per annum.
- 9. Process of vegetation absorbing carbon dioxide.
- 11. One of the four spheres making up natural systems and includes all water components.
- 13. Matter or energy leaving a system
- 14. One of the four spheres making up the natural system and including rocks, soil and minerals.
- 15. The coverage of vegetation in a forest.
- 16. One of the four spheres making up the natural system and includes all living organisms.
Down
- 1. A natural environment dominated by trees.
- 2. Particles of rock or soil, including dust, silt, sand and small rocks.
- 3. A natural feature formed when molten material, known as magma, rises up from deep within the earth and erupts onto the surface.
- 4. The few trees that are taller than the canopy.
- 6. A combination of the four spheres that interact to produce distinctive geographic characteristics.
- 10. A volcano which has not erupted for more than 10000 years.
- 12. The process where plant composition of an area changes over the medium term.