[2026] PTE Academic Reading - Re-order paragraphs

The deep ocean remains one of the least explored and most mysterious regions on our planet.

Its extreme conditions, such as immense pressure and near-freezing temperatures, have historically limited human investigation.

However, the development of sophisticated remotely operated vehicles (ROVs) has revolutionized our ability to study these depths.

These robotic submersibles allow researchers to discover unique biological communities thriving near hydrothermal vents without any sunlight.

Understanding these extreme ecosystems not only expands our biological knowledge but also provides clues about the origins of life on Earth.