'Littoral and Swamp' forests are classified under which major forest type?

Keystone species are always the most abundant species in an ecosystem.
The destruction of keystone species can lead to the collapse of the entire ecosystem.
Keystone species play a critically important role in not maintaining the structure and function of an ecosystem.

Which of the following statements correctly describes the formation of hot deserts?

Large hot deserts like the Sahara and Arabian deserts are found in the trade wind belt near sub-tropical high-pressure belts.
These deserts are located under the ascending limb of the Hadley Cell, leading to increased condensation and precipitation.
The descending limb of the Hadley Cell, which causes air to warm adiabatically and inhibits precipitation, is a key factor in their formation.
Hot deserts are primarily formed due to extreme volcanic activity.