B. because they are not manufactured by the body
Answer:
Cyanobacteria, Anabaena and Azotobactor are called Nitrogen fixing bacteria. These bacteria change the nitrogen in the atmosphere into a form that is used by the plants to make proteins. Plants take nitrogen in the form of nitrates. The atmospheric nitrogen is first converted into ammonia after that ammonia is converted into nitrates and this nitrates use by the plants to make proteins.
Euglenoid chloroplasts are surrounded by nuclear membrane
D bacteria are the main nitrogen transporters
Answer:
the awnser is the loss of water resources in estuaries
