Answer:
A. Producers
Explanation:
Each level higher reduces by 10% so the bottom will have the most biomass.
 
        
             
        
        
        
Answer:
cohesive force
Explanation:
The first three forces are also collectively called van Der Waals forces. All of the inter molecular forces that hold a liquid together.
 
        
             
        
        
        
If a pesticide that inhibits acetylcholinesterase is present in a muscle, THE MUSCLE WILL BE CONTRACTING REPEATEDLY. 
The enzyme, acetylcholinesterase is the one responsible for the termination of muscle contraction, when this enzyme is deactivated, the muscle contraction will not be turned off and the concerned muscle will contracts repeatedly.