Plants of salty seashore wetlands are called

In which of the following habitats is the variation in soil temperature most significant?

The nature and properties of soil in different places vary. This does not depend on which of the following?

Which biological factor is responsible for poor vegetation in deserts?

Two most important factors influencing the life of organisms are

Organisms that can tolerate and thrive in a wide range of temperatures are $P$,while those restricted to a narrow range of temperatures are $Q$. Choose the correct option for $P$ and $Q$.
$P \quad\quad Q$