The first, second, and fourth statements are correct.
        
             
        
        
        
Answer:
Option D- frequency of the heterozygous qenotype
Explanation:
In the Hardy-Weinberg equilibrium , 2pq stands for the genotype frequency of heterozygotes (Aa) in a population at the state of equilibrium. dominant homozygotes (AA) is represented by the p-square and q- square represents the recessive homozygotes (aa) frequency. p represents the allele frequency of A Allele and q stands for the allele frequency of the allele a. Summation of the terms gives an equal to 1(100%). The sum of all of these terms is always equal to due to the fact that the 3 frequencies in the equation are the available or possible allele combinations.
 Hardy-Weinberg is relevant for it helps us in comparison of a population's actual genetic structure as time goes on along with the genetic structure we are to get if really population was in Hardy-Weinberg equilibrium state that is population was not evolving.
 
        
                    
             
        
        
        
Gravity is one reason but also it depends in the speed, if the wave is fast, it will go higher and then bend.   hope i helped :D
        
             
        
        
        
Answer:
well childhood disease is diseases that happens in childhood like chickenpox and etc 
I hope it helps 
 
        
                    
             
        
        
        
For the sahara desert highest has been 136.4 degrees and it can getvery low at night even way under 30 degrees