Question : Give scientific reasons : Algae are the best important prim

1.	Question : Give scientific reasons : Algae are the best important primary producers.
Answer» Solution :•Because at least half of the total carbon dioxide fixation on the earth is carried out by algae through photosynthesis. Being photosynthetic they increase the LEVEL of dissolved oxygen in their immediate environment. They FORM the basis of food CYCLES of animals. Most of marine algae are useful as food. Many commercial products are also FORMED from algae such as Algin, CARRAGEEN.

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