Q.What is the Red Data Book, and which international body compiles and maintains it?

The Red Data Book is a compilation documenting, species by species, the current conservation status of threatened plants and animals, built on the IUCN Red List categories; it is compiled and maintained by the International Union for Conservation of Nature (IUCN), with national and regional versions also produced by individual countries. For each species it typically records the IUCN threat category, population estimate, range, and main threats faced, and it is the main reference conservation planners and governments use to prioritise limited conservation resources and legal protection, and to track over time whether a species' population is recovering or continuing to decline.