Answer:
1100
Explanation:
There is 10% of total energy in each increasing trophic level.                    10,000 / 10 = 1,000 ,so there are 1,000 units of energy in trophic level 2.
1,000 / 10 = 100, so there are 100 units of energy in trophic level 3.
1,000 + 100 units of combined energy would be 1,100 units of energy.
Hope this helps!
 
        
             
        
        
        
The two substances needed in this situation are:
potato extract and catechol<span />
        
             
        
        
        
Answer:
C
Explanation:
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