FCE - Reading

• A: This innovative approach reduced the time needed to analyze deep-sea water samples.
• B: However, adapting sensitive electronics to withstand the immense pressure proved difficult.
• C: They also discovered several species of marine life completely unknown to modern science.
• D: Consequently, the submarine had to abort the mission and return to the surface vessel.
• E: Most oceanographers had long believed that the trench was entirely devoid of any life.
• F: Instead, they encountered a vast underwater landscape covered in geothermal vents.
• G: It was this extreme environment that provided the perfect conditions for unique ecosystems.

Secrets of the Trench

The deepest parts of our oceans remain more mysterious than the surface of the moon, prompting a team of marine biologists to explore the Mariana Trench. Equipped with a state-of-the-art autonomous underwater vehicle, they aimed to study how organisms survive without sunlight. The vehicle was packed with high-resolution cameras and mechanical arms designed to collect samples from the dark seabed. Scientists spent years preparing for the voyage, knowing that any mechanical failure at that depth would mean losing millions of dollars in equipment.Select...ABCDEFGEngineers had to use specialized titanium alloys and synthetic foam to prevent the hull from collapsing under the weight of the water column.

As the drone finally reached the ocean floor, the live video feed transmitted back to the research ship revealed an astonishing sight. Rather than finding a flat, sandy desert as expected, the cameras captured towering rock formations emitting black smoke.Select...ABCDEFGThese structures, known as hydrothermal vents, spew superheated water rich in minerals directly into the freezing sea. Select...ABCDEFGBacteria living near the vents use these minerals to produce energy through chemosynthesis, forming the base of a fascinating food chain.

The biological diversity surrounding these toxic chimneys amazed the scientific community watching from the surface station. Swarms of translucent shrimp and massive tubeworms clustered around the heat source, thriving in conditions that would be lethal to terrestrial creatures. Select...ABCDEFGAmong these was a bizarre looking fish with completely transparent skin, allowing its internal organs to be clearly visible. Select...ABCDEFGThis groundbreaking finding proved that life possesses an incredible ability to adapt to even the most hostile environments on Earth.

The success of the mission has opened up a new era of deep-sea exploration, inspiring similar expeditions to unmapped oceanic trenches. Funding secured from environmental agencies will allow the team to develop a new fleet of autonomous submersibles next year.Select...ABCDEFGWith these advanced tools, researchers hope to unlock secrets about the origin of life on our planet and potentially find clues about living organisms on icy moons in our solar system.