Vocabulary

1. the relationships between the air, land, water, animals, plants, etc., usually of a particular area, or the scientific study of this.
4. to continue to live after almost dying because of an accident, illness, etc.
9. the job of working on a farm.
10. a secret word or combination of letters or numbers.
11. chasing and killing an animal or bird for food, sport, or profit.
12. the instructions that control what a computer does.
14. to stop living.
15. the protection of plants and animals, natural areas, and interesting and important structures and buildings, especially from the damaging effects of human activity
17. the act of destroying something, or the fact of being destroyed.
18. an act of keeping someone or something safe from something dangerous or bad.
19. a form of energy that can be produced in several ways and that provides power to devices that create light.

2. expensive
3. to not be able to find someone or something.
5. the companies and activities involved in the process of producing goods for sale, especially in a factory or special area.
6. to become less, or to make something become less.
7. past events considered together, especially events of a particular period, country, or subject.
8. to officially stop a person or many people from doing something.
13. a statement that you will harm or punish someone if that person does not not do what you want.
16. a violent act intended to hurt or damage someone or something.
17. to remove something, especially on a computer.