answer 
B)heterotrophs
-autorophs 
Encyclopedic entry. An autotroph is an organism that can produce its own food using light, water, carbon dioxide, or other chemicals.
-heterotrophs
An organism that cannot manufacture its own food and instead obtains its food and energy by taking in organic substances, usually plant or animal matter. All animals, protozoans, fungi, and most bacteria are heterotrophs. Compare autotroph.
 
-producers 
In ecology, we define producers as organisms that are able to make their own food through photosynthesis or chemosynthesis. ... An organism that cannot make its own food cannot be a producer in ecology by definition.
 
        
             
        
        
        
The parent alleles are written above the boxes and to the left of the boxes
So i believe C is the correct answer :)
        
                    
             
        
        
        
Answer: number of protons plus the number of neutrons
 
        
             
        
        
        
Answer:
True
Explanation:
I'd say its true due to the fact Lichens are very sensitive to pollutants in general.