"Red data book" - What do you know about it?

Explanation

(i) Red Data book or Red list is a catalogue of taxa facing of extinction.
(ii) IUCN
(iii) WCU
The purpose of preparation of Red List are :
(i) TO create awareness on the degree of threat to biodiversity
(ii) Identification and documentation of species at high risk of extinction.
Provide global index on declining biodiversity
Red list has eight catergories of species:
(i) Extinct
(ii) Extinct in wild
(iii) Critically Endargered
(iv)
(v) Vulnerable
(vi) Lower risk
(vii) Data deficiency
(vii) Not evaluated