Environment

3. reproduce
7. make sth poisonous by adding a chemical waste
12. result or effect of sth
13. A mountain or hill, typically conical, having a crater or vent through which lava, rock fragments, hot vapour, and gas are or have been erupted from the earth's crust
15. scientific journey
18. all the plants and animals in a particular area
20. the natural home of a plant or animal
21. to make sth develop and grow strong again
22. in a situation where one might be harmed or disappear from the world
23. (of soil or land) producing or capable of producing abundant vegetation or crops

1. The supply of water to land or crops to help growth, typically by means of channels
2. damage or destruction affecting a large area or a lot of people
4. mixture of waste from the human body and used water that is carried away from houses by pipes under the ground
5. get rid of sth
6. the use of sth such as fuel or energy; process of eating sth
8. knowledge of a subject, issue or situation; ability to notice things
9. substance that can be broken into very small parts by bacteria so that they are not harmful to the environment
10. a room with thick walls and strong door used for storage
11. protect
14. relating to farming food without using chemicals
16. decline or deteriorate physically, mentally, or morally
17. solid substances that settle at the bottom of a liquid
19. containing poison