Why did IUCN prepare red data book?

Related questions

1. What is IUCN and what is its aim?
2. What is the purpose of IUCN?
3. What is IUCN category?
4. What is published by IUCN?
5. What is IUCN classification?
6. What does IUCN vulnerable mean?
7. What are the categories in the IUCN Red List?
8. What is the role of IUCN?
9. What is the main aim of IUCN Red List?
10. What is IUCN Red List Categories?

Tags

1. #danger
2. #prepared
3. #about
4. #includes
5. #record
6. #which
7. #various
8. #known
9. #species
10. #create
11. #awareness
12. #endangered
13. #helps
14. #contains
15. #vulnerable
16. #plants
17. #animals
18. #extinct
19. #maintains