Answer:
"Biodegradable” refers to the ability of things to get disintegrated (decomposed) by the action of micro-organisms such as bacteria or fungi biological (with or without oxygen) while getting assimilated into the natural environment."
 
        
             
        
        
        
In the climax, usually the most tense situation in the conflict is introduced. After the climax follows with the falling action. For example a murder mystery's climax is maybe catching the murderer or the time the murder takes place. Hope this helps!
        
             
        
        
        
Know, because know is present tense as is the rest of the sentence. 
        
             
        
        
        
The items must be in chronological order if they are being put in a list
        
             
        
        
        
I believe it’s sometimes because it describes an adjective