The term 'Monsoon' is derived from the Arabic word: MCQ with Answer and Explanation

Explanation:
The mesosphere is the coldest layer of the atmosphere, with temperatures dropping to as low as -90°C at the mesopause.

Explanation:
Humid continental climates (Köppen Dfa/Dfb) are characterized by cold winters (below 0°C) and warm to hot summers, with precipitation throughout the year.

Explanation:
The Walker Circulation is a large-scale cell of rising and sinking air over the Pacific Ocean. Warm air rises over the western Pacific (near Indonesia) and sinks over the eastern Pacific. This circulation is disrupted during El Niño events.