Answer: The bacteria break down organic material that contain nitrogen and release it back into the cycle. 
For example, bacteria breaks down a leaf, then it will release the nitrogen into the soil for plant.
 
        
             
        
        
        
<span>UN1825 refers to Sodium monoxide.It is a white granular material. It reacts with water to give sodium hydroxide with the evolution of heat. It is corrosive to metals and tissue. The oxides of sodium and potassium react with water vigorously and with enough evolution of heat to cause boiling and spattering of hot caustic solution.Reaction with water may generate much heat that will increase the concentration of fumes in the air. Fire will produce irritating, corrosive and/or toxic gases. Runoff from fire control or dilution water may be corrosive and/or toxic and cause pollution.</span>
        
             
        
        
        
I think the answer is renal medullae
        
             
        
        
        
Answer: These are known as <u>pathogens.</u>
Additional:
- Anthrax is caused by <u>Bacillus anthracis</u>
- Strep throat is caused by <u>Streptococcus pyogenes</u> 
- Tetanus is caused by <u>Clostridium tetan</u>
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I hope my answer helped ⛄️