Africa, australia, north america, south america, antarctica, asia, and europe
        
                    
             
        
        
        
Answer:
Explanation
Given that 36% are recessive in traits
100-36 = 64% for dominant traits considering a whole population to be 100%
P=dominant allele
q= recessive allele
P2= dominant genotype
q2= recessive genotype
 according to hardyweinberg principle, p+q=1
64/100= 0.64 frequency for dominant traits or genotype, therefore 
 p2=0.64 
 then
P=√0.64
p= 0.8
Therefore, dominant allele frequency (p) for the population is 0.8 
 
        
             
        
        
        
Water has special characteristics because liquid water is denser than ice and ice floats on top of liquid water.
Answer: Option A & D
<u>Explanation:</u>
A water molecule is formed by the covalent bonding between two atoms of Hydrogen atom with one atom of Oxygen. In water, the Hydrogen bonds are the one that keeps the water molecule intact.  
When the water molecule freezes the bonding becomes weak as they are separated and set apart which makes the liquid water denser than ice. Normally a substance floats if it is less dense. Ice floats because it is less dense than water.