Are Pleurococcus and Chlorella
Unicellular or Colonial? Explain pls

Both Pleurococcus and Chlorella are Unicellular algae i. e. made of one cell. Chlorella is a type of green algae which grows in colonial form. There are thousands of cells present in colonial form, each cell perform a particular function. For example, some cells are responsible for movement, some for reproduction etc. The jobs are distributed between these cells. But in Unicellular, one cell perform all functions of life.

poor water quality affects most estuarine organisms, including commercially important fish and shellfish. the pollutants that have the greatest impact on the health of estuaries include toxic substances like chemicals and heavy metals, nutrient pollution (or eutrophication), and pathogens such as bacteria or viruses.

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