Global Systems Crossword

2. Greenhouse gases emitted into the atmosphere.
3. a layer of glacier ice that is over 50 000 square kilometres.
9. the emission or transmission of energy in the form of waves or particles.
10. The area of gas surrounding the planet.
13. an energy that is naturally produced using natural resources such as sun, water and wind.
14. the convertion of light into energy. This is done by plants.
17. the continuous circulation of water around the earth.
18. an environment where organisms interact with each other and their environment.
19. The chemical element with the symbol N.
21. The build up of evaporation.
22. an invisible electromagnetic radiation with wave lengths longer than visible light.
23. the liquid layer of the earth.
25. the chemical compound with the chemical formula CH 4.

1. The process of cutting down and harvesting trees.
3. the perios of time between glacation.
4. The gas created when people exhale.
5. the land layer of the earth.
6. Where the lithosphere, hydrosphere and atmosphere meet to create an environment where living things live.
7. area of radio wavelengths.
8. The process of the earth being warmed up due to greenhouse gases.
11. the extreme of the southern oscillation which causes drought in areas of Australia.
12. the vaporization of liquid form the surface of liquid.
15. Long term averages of weather conditions.
16. the daily conditions of the atmosphere such as humidity, rainfall and temperature.
20. a fuel that contains the carbon of plants and animals that died millions of years ago and were preserved over time.
21. Carbon is recycled by this through soil, water, living things and the atmosphere.
24. Parts of the earth where the temperature in the layers of soil and rock never goes above freezing point.