Ozone layer depletion or hole in ozone layer is being found in

Which of the following is not true for a species?

Who defined ecology as the study of the relations of all organisms to all its environments

Edaphic factors are related to

Exotic species are also called

$I.$ introduced species

$II.$ alien species

$III.$ non-indigenous species

$IV.$ non-native species

Choose the correct combination

During adverse season, therophytes survive by