The population size of a predator species is directly controlled by the population size of it's prey. If the predator has no prey the population size will go down because they have no food.
        
                    
             
        
        
        
Answer:
 here you go!!
Explanation:
 enzyme tyrosinase, which creates the color of the skin, eyes, and hair shades.
 
        
             
        
        
        
The Sun is the main cause for our weather, and different season (in different areas where you live it depends on how hot or cold it is also caused by the sun)
Most seasons, like in summer it's hot Also caused by the sun, in winter it snows because the sun is in a different location.
        
             
        
        
        
<span> Human females produce gamete cells that each have one X chromosomes. </span>
        
             
        
        
        
Answer:
<h2>c. Division of these two groups occurred after the protostome developmental sequence appeared. </h2>
Explanation:
- Protosomes are such types of organisms in which the mouth part developed first during embryonic development.
-  Those animals in which anus develop first are known as deuterostomes.
-   This differentiation takes place during the embryonic development of the organisms.
-  Since lophotrochozoan and Ecdysozoa both are protostomes animals and categorized on the basis of molecular evidence.
-  Thus these two groups were formed after the appearance of the protostomes.