Their differences may eventually stop the separated squirrels from breeding with one another this is an example of  an Allopatric speciation
Explanation:
In allopatric speciation, species from the same population evolve some different characters due to the differences in geographical locations. 
In this scenario, the species become reproductively isolated and diverge.
The mating times of the squirrel have changed due to the environmental changes. 
They no longer interbreed and hence no viable offspring thus sexually isolated from each other.
 
        
             
        
        
        
Answer:
<h2>
Haploid=13</h2><h2>
triploid=39 </h2><h2>
tetraploid=52</h2><h2>
trisomic=14 </h2><h2>
monosomic=12</h2>
Explanation:
Given;
A species with a diploid number of 26,  so 26= 2n ( a diploid cell),
so in haploid condition, chromosome number becomes half (13 in this case). triplod is when 2n + n, and 2n +2n ( tetploid). Trisomy and monosomy is the addition or deletion of a sinlge chromosome of a sinlge set  .
Haploid=13, one chromosome from each pair of chromosome set,
triploid=39 (13× 3); diploid+ n( 3n)
tetraploid=52 (13× 4) 4n
trisomic=14 (13+1) ; n+1
monosomic=12 (13-1); n-1
 
        
             
        
        
        
Answer:
I think its the first one but I'm not sure
 
        
                    
             
        
        
        
Answer:
Geologic Time Scale
Hope This Helps!   Have A Nice Day!!
 
        
                    
             
        
        
        
C. Dinosaur footprint as it is the only body part that is stated in the choices.
Hope this helps :)