Question

give one important use of algae​

Answer 1

Answer:

Algae are used in wastewater treatment facilities, reducing the need for greater amounts of toxic chemicals that are already used. Algae can be used to capture fertilizers in runoff from farms. When subsequently harvested, the enriched algae itself can be used as fertilizer.

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Answer 2

Answer:

Algae are used in sewage treatment facilities

Explanation:

It  helps in reducing the need for greater amounts of toxic chemicals that are already used in sewage treatment plants