Across
- 4. The term given to bacteria and fungi which break down dead and waste material.
- 8. The process by which water evaporates from plant leaves.
- 9. A chemical process that releases carbon dioxide and energy.
- 10. A solid form of water.
- 11. This process allows carbon dioxide to be converted into carbon-containing compounds in plants.
- 13. Animals gain carbon compounds by doing this.
Down
- 1. This human activity involves removing large areas of pant life from earth.
- 2. Burning of fossil fuels is known as this.
- 3. Rain, sleet, snow or hail.
- 5. The carbon-containing compound that plants make using light energy.
- 6. Process by which water is converted by the sun from liquid on earth into vapour.
- 7. What happens as the water vapour rises and it meets cooler air.
- 12. Fossil fuels form when this process does not take place.
