Scientists discover vast underground ecosystem of 'deep life' microbes

The video discusses the discovery of an underground biosphere 2.5 kilometers below the seabed, filled with ancient microbes. These lifeforms thrive in extreme conditions, feeding on energy from rocks. It is suggested that 70% of Earth's bacteria and archaea exist underground, contributing significantly to the planet's carbon. Unique microorganisms, such as those living in sulphuric springs and hydrothermal vents, are highlighted for their ability to grow at high temperatures.

What was discovered 2.5 kilometers below the seabed?

• A treasure chest

• An underground biosphere

• A new type of fish

• A lost city

What do the microbes in the underground biosphere reportedly feed on?

• Sunlight

• Other microbes

• Water

• Energy from rocks

What percentage of Earth's bacteria and archaea are believed to exist underground?

• 30%

• 50%

• 70%

• 90%

How much carbon is estimated to be contained in the underground bacteria and archaea?

• 5 to 10 million tons

• 10 to 15 million tons

• 15 to 23 million tons

• 25 to 30 million tons

Where is Geogemma barossii found?

• In freshwater lakes

• In the Arctic

• In hydrothermal vents

• In the desert