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'Dead Zones' Have Been Haunting The Ocean For Longer Than Anyone Ever Knew


Dead Zones Have Been Haunting The Ocean For Longer Than Anyone Ever Knew
3 JUNE 2021
Earth s oceans are full of life, with multitudes of creatures making their home beneath the waves. But not everywhere in the deep blue sea is receptive to life s presence.
In recent years, scientists have become increasingly concerned about dead zones : areas of hypoxic waters in the ocean where oxygen levels are so low, marine animals cannot survive within them.
 
As troubling as dead zones are, however, this is not exactly a new problem in the oceans, scientists say.
In a new study, researchers discovered that dead zones have actually been a recurring feature of the Pacific Ocean for longer than anybody ever realized – at least around 1.2 million years, in fact. ....

United States , Pacific Ocean , Christina Ravelo , Karla Knudson , Bering Sea , University Of California , North Pacific , Ana Christina Ravelo , Santa Cruz , Mp Quot , ஒன்றுபட்டது மாநிலங்களில் , பெஸிஃபிக் கடல் , பெரிங் கடல் , பல்கலைக்கழகம் ஆஃப் கலிஃபோர்னியா , வடக்கு பெஸிஃபிக் , சாந்தா குரூஸ் ,