Blue green algae fix what directly from air to enhance fertility of soil
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Blue green algae conversation atmospheric nitrogen to nitrogen compounds like nitrates . Same work rhizobium bacteria do.
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Atmospheric Nitrogen.
A blue-green algae is also called Cyanobacteria.
It is a bunch of photosynthetic bacteria which many people also call as "pond scum."
They are often blue-green in color.
At the same time, they can be green, brown, blue, or reddish-purple.
These algae variants usually develop in water bodies like slow-moving streams, ponds and lakes where the water can be warm and filled with useful chemicals like nitrogen and phosphorus.
When the conditions are correct, blue-green algae may multiply very fast.
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