Which phenomenon was observed in Lake Victoria of East Africa?

When the Nile perch was introduced into Lake Victoria in East Africa,it led to the extinction of an ecologically unique assemblage of more than $.............$ species of cichlid fish in the lake.

Choose the correct pair of extinct species and their region of origin.

Habitat loss and fragmentation, over-exploitation, alien species invasion, and co-extinction are causes for:

At high altitudes,birds become rare or extinct. The plants which may disappear along with them are:

What could be the possible explanation for the greater vulnerability of amphibians to extinction compared to other animal groups?