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single-celled algae that have two flagella and are found mainly in seawater but are also common in fresh water. An algal bloom of dinoflagellates can result in a visible coloration of the water colloquially known as red tide.
the excessive growth of alga and hydrophytes in response to the addition of artificial or...
the formation of a relatively complex chemical compound from simpler substances.
allergic reaction to certain allergens such as pollen. It causes sneezing, a runny nose and...