humans and nature

2. /cut down trees
4. /coming from or existing in the hottest parts of the world
7. /a particular type of land地形地势
8. /trees that are cut down and used for building or making thins
10. /relating to a planet
12. /the act of process of sailing or destroying something, for example by getting ride of a lot of people
15. /the study of ancient societies by examine what remains of their buildings, graves, tools, etc.
17. /of or forming or resembling a peninsula
18. /羚羊
19. /resulting in someone's death
20. /to try to stop thinking about something or someone
21. /when a person or animal is kept in a prison, cage, etc. and not allowed to go where they want

1. /an area of land covered with trees
3. /a group of animals or plants whose members are similar and can breed together to produce young animals or plants
5. /if an animal or pant reproduces, or reproduces itself, it produces young plants or animals
6. /the natural home of a plant or animal
9. /a large area of land in a hot country, where crops such as tea, cotton, and sugar are grown
11. /the way in which members of a family are descended from other members
13. /a large area of flat land that is higher than the land around it
14. /the variety of plants and animals in a particular place
16. /a type of animal that drinks mils from its mother's body when it is young