The Caspian is a subspecies of which animal?

$A$ species which was introduced for ornamentation but has become a troublesome weed in India is:

Genetic diversity in agricultural crops is threatened by:

Which of the following endangered animals is the source of the world's finest,lightest,warmest,and most expensive wool,known as Shahtoosh?

The species,which is going to become extinct due to lack of proper care,would be called:

Exotic species are also called
$I.$ introduced species
$II.$ alien species
$III.$ non-indigenous species
$IV.$ non-native species
Choose the correct combination