‘Dead Zones’ Have Been Haunting The Ocean For Longer Than Anyone Ever Knew – ScienceAlert

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.
In recent decades, dead zones have vastly expanded their reach and are also no longer confined to the ocean, with oxygen loss in lakes…

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