Q. Assertion (A) IUCN prepares and maintains a Red Data Book since
Reason (R) It is catalogue which provides an awareness about the degree of threat to the biodiversity.

 465  140 Biodiversity and Conservation Report Error

Solution:

The created the Red Data Book since , so as to create awareness about the endangered species. The Red Data Book is a catalogue which provides a record of all endangered plants and animals. It provides information on the population status of various species, i.e. the degree of threat to the biodiversity.