Because if it’s sexual it has to have both parnets dna and if it’s asexual it has to have one parents dna
        
             
        
        
        
Answer:
A.the foundation of most food chains.During photosynthesis plants let out oxygen and gain carbon dioxide from the atmosphere which intern helps plants to manufacture food.
 
        
             
        
        
        
Answer:
the particles will eventually fill the space of the room, which is why people will be able to smell her perfume. this is called diffusion.
Explanation:
 
        
             
        
        
        
Answer:
Beavers and their dams play an important role in nature. Because of the dramatic effects their dams have on surrounding ecosystems, these mammals are considered a keystone species. By constructing dams they create wetlands -- lush environments which attract fish, ducks, frogs and other creatures.
Explanation:
 
        
             
        
        
        
<span>What ensures that DNA molecule is replicated
exactly as its original strand is with the ability of the DNA to make way and
let the base pairs match with each base. This enables them to form the same
strands so that it is identical and not different with the original strand.</span>