environment

3. a group of people living in the same place or having a particular characteristic in common.
4. the presence in or introduction into the environment of a substance which has harmful or poisonous effects.
8. a type of biofuel that is naturally produced from the decomposition of organic waste.
9. the presence and flow of electric charge.
11. a printed sheet of paper containing information or advertising and usually distributed free.
13. a person who applies for a job or is nominated for election.
15. a small mechanical or electronic device or tool, especially an ingenious or novel one.

1. a member of a council.
2. a person who protects or defends something.
5. rubbish such as paper, cans, and bottles left lying in an open or public place.
6. a building or group of buildings where goods are manufactured or assembled chiefly by machine.
7. the words of a song.
10. a living organism of the kind exemplified by trees, shrubs, herbs, grasses, ferns, and mosses.
12. seriously at risk of extinction.
14. a quantity of precious metals, gems, or other valuable objects.