The total number of species, that are known and described , range between:

The total number of species that are known and described in ranges between.

the number of species that are known and described range between

the number of species that are known and described range between

Total number of living species

how many species are known and described till now?

Sibling species are also known as

The total number of species included in the animal kingdom are bout

Assertion : About the total number of species present on earth some extreme estimate range from 20 to 50 million. Reason : We have no clear idea of how many species are yet to be discovered and described.