Answer:
Phylogenetic trees can be described as diagrams which represents the evolutionary histories of organisms. The organisms that share more common traits or functions are more closer to one another in the diagram.
The phylogenetic tree in the above diagram shows that the ancestors of Danes, Chinese and Tibetans carried the regular EPAS1 alleles. 
According to the tree, the Chinese are more closer to the Tibetans as they carry the Tibetan EPAS1 alleles which the Danes do not carry.
 
        
             
        
        
        
D.theory.
Hypothesis is an idea or explanation of something that is based on a few know facts but that has not yet been proved to be true or correct.
While a theory is a formal set of ideas that is intended to explain why something happens or exists.
        
                    
             
        
        
        
Answer: i believe it’s A and C
Explanation: i took biology and remember these lessons
 
        
                    
             
        
        
        
<span>counteracted acidification</span>
        
                    
             
        
        
        
Answer:
Explanation:
Cells generate energy from the controlled breakdown of food molecules. ... View Terms of Use  molecules that other cells rely on for the energy required to sustain growth, metabolism, ... proteins that span the cell membrane permit specific molecules into the cell, Figure 2: Cells can incorporate nutrients by phagocytosis.