Which of the following is not a part of the atmosphere?

What are the average annual temperature and annual precipitation range for a desert biome?

What is the typical temperature range in high-altitude regions,which acts as a significant environmental factor?

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 $Q$.
$P \quad\quad Q$

In which form do organisms realize the emergence of their environment?

Emergent land plants that can tolerate the salinities of the sea are called: