noun
HABs (Harmful Algal Blooms) are large concentrations of algae that produce toxic or harmful effects on people, animals, and ecosystems.
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Harmful algal blooms (HABs) can have devastating effects on marine ecosystems.
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Hey, have you heard about those HABs causing problems in the ocean?
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Those HABs are seriously messing things up in the water.
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Like a toxic blanket, HABs smother the life out of the ocean.