Global warming risks most cataclysmic extinction of marine life in 250 million years
Global heating is causing such a drastic change to the world’s oceans that it risks a mass extinction event of marine species that rivals anything that’s happened in the Earth’s history over tens of millions of years, new research has warned. Accelerating climate change is causing a “profound” impact upon ocean ecosystems that is “driving extinction risk higher and marine biological richness lower than has been seen in Earth’s history for the past tens of millions of years”, according to the study.
The world’s seawater is steadily climbing in temperature due to the extra heat produced from the burning of fossil fuels, while oxygen levels in the ocean are plunging and the water is acidifying from the soaking up of carbon dioxide from the atmosphere. This means the oceans are overheated, increasingly gasping for breath – the volume of ocean waters completely depleted of oxygen has quadrupled since the 1960s – and becoming more hostile to life. Aquatic creatures such as clams, mussels and shrimp are unable to properly form shells due to the acidification of seawater…
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