More Clues to the Oldest Fossils Ever

The video discusses recent scientific discoveries of ancient life, including microfossils found in Quebec and potential evidence in Greenland's Isua greenstone belt. It highlights the use of vibrational spectroscopy to identify organic material in ancient rocks. Additionally, the video addresses ocean acidification, explaining how increased CO2 levels affect ocean chemistry. Researchers at Caltech propose using the enzyme carbonic anhydrase to accelerate natural chemical reactions, potentially mitigating acidification effects. This research could enhance the ocean's bicarbonate buffer, offering a partial solution to rising CO2 levels.

What technique did researchers use to analyze the composition of ancient rocks in Greenland?

• Electron microscopy

• Vibrational spectroscopy

• Mass spectrometry

• X-ray diffraction

What is the significance of finding carbon bonded to nitrogen, oxygen, and phosphorus in ancient rocks?

• It shows mineral formation

• It suggests the presence of water

• It points towards evidence of life

• It indicates volcanic activity

What is the primary role of the bicarbonate buffer system in the ocean?

• To increase the salinity of ocean water

• To reduce water temperature

• To moderate pH levels

• To enhance marine biodiversity

What is the main consequence of increased atmospheric CO2 on ocean chemistry?

• Decreased salinity

• Increased ocean temperature

• Ocean acidification

• Enhanced marine life growth

Which enzyme did Caltech researchers use to speed up ocean floor reactions?

• Catalase

• Amylase

• Lipase

• Carbonic anhydrase