biodiversity

3. Gradual change in the genetic makeup of a population over time
7. A species at risk of extinction
9. Excessive use
11. The study of the relationships between organisms and their environment
15. Species that is not native to a specific location
17. Relating to the ideas, customs, and social behaviour of a society
21. People at a local level, rather than at the center of major political activity
23. The action of protecting or conserving something
24. Reducing the severity of something
25. Existing in or caused by nature; not made or caused by people
26. The process of restoring to a former condition
28. The natural environment where an organism lives
32. The science and practice of managing forests
33. The process of dealing with or controlling things or people
34. A species occurring outside its natural range
35. Capable of being renewed or replaced
38. Materials that can be used to satisfy needs
39. The surroundings or conditions in which a person, animal, or plant lives
41. The effect of something
42. The process of growth or improvement
43. The state of being diverse
44. An area with a high concentration of endemic species and under threat
46. A species whose presence, absence, or abundance reflects environmental conditions
48. Of, found in, or produced by the sea
49. At risk of becoming endangered
50. The gradual change in the composition of a community over time

1. The diversity of life in all its forms
2. Originating or occurring naturally in a particular place; native
4. A complete list of items
5. Actions taken to achieve a particular end
6. The action of returning something to its former condition
8. A plan of action designed to achieve a long-term or overall aim
10. A community of interacting organisms and their environment
12. The state of having a variety of something
13. The long-term pattern of weather in a particular area
14. The business of providing services to tourists
16. The complete disappearance of a species
18. Fair and impartial
19. The part of the earth's surface that is not covered by water
20. The presence of harmful substances in the environment
22. The assistance and advice provided by an ecosystem
27. The process of dividing a habitat into smaller, isolated parts
29. An individual living thing
30. The action of defending something
31. The process of decline in the quality of something
36. The management of human use of nature for sustainability
37. Meeting the needs of the present without compromising the future
40. Observing and checking the progress or quality of something over a period of time
45. A group of organisms capable of interbreeding
47. Relating to genes or heredity