Question

here is your answer OK
NOTE: all answer in points

1 what is meant by red data book?
2 why were botanical gardens established ?
3 what do you mean by biodiversity hot spots?

Answer 1

red data book is collection of species of animals is know as red data book


in botanical gardens is found of birds is known as botanical gardens and saving of birds

biodiversity hotspot is mega biodiversity is known as biodiversity hotspot

Answer 2

red data book contains the species which are going to be extincted