Fossil shells help humans find the cause of the Earth becoming increasingly polluted?

According to the Daily Mail, a recent report said that the event of an asteroid wiping out the existence of dinosaurs dealt a severe blow to the Earth, which has always been in a state of tension,
unstable and on the verge of disaster.

The carbon dioxide (CO2) produced by the volcano in modern India creates acidic oceans that partially melt the shells and snails. Watching how these creatures change over time suggests that the planet is struggling with high levels of carbon dioxide in the atmosphere.

“The Earth is clearly under “stress” in the face of a series of horrific extinction events,” Benjamin Linzmeier from Northwestern University (USA) said.

Researchers suggest that, from an understanding of the Earth’s response to past global warming, we can shed light on humanity’s fight against the ongoing climate crisis.

The Deccan trap — a 200,000-square-mile array of volcanoes that erupted over long periods of time and emitted vast amounts of greenhouse gases. The oceans absorb CO2 and become more acidic, which in turn affects the animals that live in them.
This researcher also argues, that the impact of asteroids coincides with the destabilization of the previous carbon cycle. But this does not mean that we have an answer to what really causes extinction.

Shells can provide important clues about carbon dioxide levels in the history of atmospheric fluctuations. CO2 increases the acidity of the oceans, which changes the way shells are formed, since more acidic water can dissolve calcium carbonate shells.
“We can measure calcium isotope variants with great accuracy,” said Andrew Jacobson, Ph.D., lead author of the study.

The team expected to see some changes in the shell’s composition, he added, but the rapid change in reality surprised them.

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