Answer:
one common ancestor
Explanation:
Although Darwin’s theory is often described as the theory of evolution by natural selection, most commentators recognize that common ancestry (the idea that all organisms now alive on earth and all present day fossils trace back to one or a few “original progenitors”) is an important part of the Darwinian picture. 
 
        
             
        
        
        
Answer:
hybridization is categorized as crossing organisms that have different traits to bring together the best of each. However, this can come with some post-zygotic barriers.
Reduced hybrid viability: hybrid offspring does not survive
Reduced hybrid fertility: hybrid offspring cannot reproduce
hybrid breakdown: first generation of hybrids are viable and fertile, however, their offspring (generation 3) are sterile. 
 
        
             
        
        
        
Answer:
Boxwood shrubs are slow-growing plants with dark green glossy leaves. Some varieties have variegated leaves. Leaf shape depends on the variety; some are round while others are elliptical. They provide thick cover because the foliage begins close to the ground and is dense enough to block light.
Explanation:
 
        
             
        
        
        
Answer:
When the average kinetic energy of the molecules goes up (a rise in temperature), the average speed of the molecules increases. And lower average kinetic energy of the molecules means they have lower speed.
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