Answer:
The correct answer is - Noctural worms have the advantage over diurnal due to the fact that the nocturnal worms are burrowing during the feeding time of birds.
Explanation:
Natural selection is the process in which organisms adapt according to environmental changes to increase their survival rate. Natural selection leads to natural changes in different organisms.
In this case, diurnal worms are forced by the natural selection here to adapt to the change if they want to survive. Here, natural selection works for the nocturnal and against the diurnal.
 
        
             
        
        
        
Answer:
A mutation occurs during the development of muscle cells but not in blood cells. Different genes are activated in muscle cells than in blood cells. Muscle cells experience different environmental influences than blood cells.
Explanation:
 
        
                    
             
        
        
        
<span><span>The blood cells containing hemoglobin,  that transports oxygen (O2) to the body tissues of vertebrates, are called red blood cells.</span> Red blood cells (RBCs), are also referred to as red cells, red blood corpuscles, haematids, erythroid cells or erythrocytes<span>, (from Greek erythros for "red" and kytos for "hollow vessel"..RBCs take up oxygen in the lungs and release it into tissues while squeezing through the body's capillaries.</span></span>
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I'm pretty sure the answer is C, there are 4 nitrogenous bases involved. 
<span>1) Adenine 
2) Guanine 
3) Thymine 
4) Cytosine</span>
        
             
        
        
        
Answer:
a.  the reindeer population exceeded it carrying capacity
Explanation:
not enough food for the reindeers  due to an increase in deer population.