1) The ancient city of Rome was founded in 753 BC and went on to become one of the most powerful and influential civilizations in history.

2) The word "forest" contains two vowels: O and E.

3) The ocean covers about 71% of the Earth's surface and contains roughly 97% of the planet's water.

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