The answer is graded potential<span>. Its made of various action potentials that depolarise the neuron incrementaly, in short interspersed intervals that do not give time for the neurons to return to resting potential. Therefore, the actions potentials, of varying sizes, grade up in  sum and when they cumulatively reach the threshold level, they invoke an impulse in the nerve</span>
 
        
        
        
Answer:
leopard gecko
Explanation:
because it matches the description
 
        
                    
             
        
        
        
<span>Estrogen is involved in a feedback mechanism associated with the follicular phase of menstruation. </span>
        
             
        
        
        
Okay, biology isn't exactly my strongest subject (it never has been), but I'm pretty sure the answer is nucleotides. DNA is made up of nucleotides. Each nucleotide contains a phosphate group, a sugar group, and a nitrogen base. There are four different nitrogen bases: adenine (A), thymine (T), guanine (G), and cytosine (C). A always pairs with T, and G always pairs with C.