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HL 4.4. Harmful Algal Blooms

In this activity, we will learn about Harmful Algal Blooms (HABs). Background Information Algal blooms may produce toxins that threaten the health of humans and other animals. Harmful algal blooms (HABs) contain a variety of organisms, including cyanobacteria, protists, algae and dinoflagellates. A small number of these organisms produce potentially fatal toxins. In freshwater, cyanotoxins are the most common toxins....

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