Atoms do differ in their affinity for neutrons, a property called electronegativity. Therefore, true is the correct answer.
        
             
        
        
        
Answer: DNA contains the nucleotides guanine (G), cytosine (C), adenine (A), and thymine (T). RNA contains the nucleotides guanine (G), cytosine (C), uracil (U), and thymine (T). The difference between the two is that RNA contains uracil (U) rather than adenine (A). 
The base pairs in DNA are adenine with thymine and guanine with cytosine. The base pairs in RNA are uracil with thymine and guanine with cytosine.
        
             
        
        
        
C should be correct.
A is incorrect because cancer is when cells reproduce too quickly and out of control.
B is incorrect because growth factors control the reproduction of cells, not when they die.
I'm honestly not sure about the last one, but it's the only one left.
        
                    
             
        
        
        
Answer:
The correct answer is C. the size of the algae population .
Explanation:
An ecosystem is made up of biotic and abiotic factors. Biotic factors are the living components of an ecosystem that impact the ecosystem and abiotic factors are the non- living components that have their own impact on the ecosystem.
So according to the definition of biotic factor algae is the biotic factor in this question because algae is a living component of the ecosystem that influences the ecosystem by providing food to the corals.  
So by providing food algae supports the coral's ecosystem and coral provides a home to algae to grow. In the ecosystem, both biotic and abiotic factors interact with each other.
So the correct answer is C. the size of the algae population.
 
        
             
        
        
        
Answer:
The cells in the body don't respond properly to the insulin hormone. This causes a buildup in glucose in the blood, which can progress to diabetes.