1) Mountains are important water sources, as they capture and store precipitation, feeding rivers and supporting ecosystems downstream.

2) The rise of remote work and digital transformation has been accelerated by the COVID-19 pandemic, leading to changes in work dynamics, reliance on digital technologies, and the reimagining of traditional office spaces.

3) Cyclones play a vital role in Earth's climate system by redistributing heat and moisture, maintaining global temperature patterns, and influencing weather patterns.

4) The book series "The Chronicles of Narnia" by C.S. Lewis has sold over 100 million copies worldwide.