The species whose number has been reduced considerably and is at the verge of extinction, is called

Bald eagle has been at high risk of extinction due to

Bald eagle has been at high risk of extinction due to

Assertion : Threatened species are those living species which have been greatly reduced in their number and are liable to become extinct if the causative factors continue. Reason : IUCN is an international organisation which maintains the IUCN red list of threatened species, to assess the conservation status of different species.

How many species of orchids has been reported ?