Biotic means that it came from or has been produced/has been in relation with an organism. So your answer would be THE BACTERIA THAT LIVES IN THE INTESTINE OF A RABBT, it was the interaction of 2 things within them selves.
        
                    
             
        
        
        
D= m/v
solve this formula to find v 
by solving we get,
v = m/D
v = 13/19.3
v = 0.67 cm^3 
        
                    
             
        
        
        
Answer:
Human activities contribute to climate change by causing changes in Earth's atmosphere in the amounts of greenhouse gases, aerosols (small particles), and cloudiness. The largest known contribution comes from the burning of fossil fuels, which releases carbon dioxide gas to the atmosphere
Explanation:
 
        
             
        
        
        
It’s in the picture so They travel slower than p waves, they result in much ground motion, they are produced by p and s waves