You should ask your teacher to be sure, but I think that you teacher meant like the  mode of transmission.... Like genetically inherited and such.
        
             
        
        
        
Answer:
<em>“Eutrophication is an enrichment of water by nutrient salts that causes structural changes to the ecosystem such as: increased production of algae and aquatic plants, depletion of fish species, general deterioration of water quality and other effects that reduce and preclude use”.</em>
Explanation:
<em>Hey mate... Here's your answer...</em>
 
        
             
        
        
        
The lowest level of environmental complexity that includes living and nonliving factors is the 
C: Ecosystem 
 
        
                    
             
        
        
        
Owls , pine trees, and deer
        
             
        
        
        
Answer:
D The forces are unbalanced by 2
Explanation:
basically, you subtract both your numbers if your number is 0 they are balanced if not then they are unbalanced by the difference of the two numbers