The Russian species that became extinct in recent years is . . . . . . .

Genetic diversity in agricultural crops is threatened by:

Which of the following organisms are badly affected when large habitats are broken up into small fragments due to various human activities?

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.

Which of the following is responsible for the extinction of wildlife?

The extinct animal $Dodo$ belongs to which region?