The first top one is right
        
             
        
        
        
Answer:
B
Explanation:
They altered rocks into soil that was able to support simple plants such as grasses. This is an example of altering the environment around them to make it more habitable for other species. 
 
        
             
        
        
        
The jet stream brings down colder air from the north into the southern regions of the United States so B . southeast I think.
 
        
                    
             
        
        
        
Answer:
Decomposition occurs through two primary chemical processes: autolysis and putrefaction. They often occur in tandem, but one may predominate in certain conditions. Autolysis (or “self-digestion”) is the destruction of cells through the action of their own enzymes.
Explanation: