Humans and their environment

12345678910111213
Across
  1. 3. The removal of trees from areas of woodland or forest
  2. 5. The large part of a cows stomach that acts as a fermentation chamber.
  3. 7. Put on crops to encourage an increased yield.
  4. 8. Development to improve the quality of life for people now without reducing the ability of future generations to meet their own needs.
  5. 12. The product of decomposition in the absence of air.
  6. 13. A method of reducing the volume of biodegradable waste entering landfill sites.
Down
  1. 1. Examples include metal ores, fossil fuels and building stone.
  2. 2. Areas filled with waste which is later compressed.
  3. 4. This involves the mechanical sorting of mixed rubbish to separate the materials which can be melted down and turned into new products.
  4. 6. A greenhouse gas released by cattle
  5. 9. A method of reducing the volume of waste that goes into landfill that is often wrongly accused of causing air pollution.
  6. 10. All the living things residing in an area and their interaction with this environment.
  7. 11. The type of bacteria involved in braking down carbon rich substances to produce biogas.