Question

some bacteria and blue green alage able to fix
nitrogen from atmospher these organisms
are called​

Answer 1

Answer:

Two kinds of nitrogen-fixing bacteria are recognized. The first kind, the free-living (nonsymbiotic) bacteria, includes the cyanobacteria (or blue-green algae) Anabaena and Nostoc and genera such as Azotobacter, Beijerinckia, and Clostridium.

Answer 2

Answer:

Diazotrophs are organisms that fix atmospheric nitrogen.