Soil formed by transportation of disintegrated parent material from one place to another is called

Ultraviolet radiation from sunlight cause the reaction that produce

Exotic species are also called

$I.$ introduced species

$II.$ alien species

$III.$ non-indigenous species

$IV.$ non-native species

Choose the correct combination

Temperature gradient over earth surface is

A bird enters the mouth of crocodile and feed on parasitic leeches. The bird gets food and crocodile gets ribs of blood sucking leeches. Both the partners can live independently. Such an association is

Rise in the temperature and air humidity can be observed from