A. Sound is a form of mechanical energy
 
        
                    
             
        
        
        
That would be One glucose and one galactose molecule
I hope this helps :3
        
             
        
        
        
1859
On the Origin of Species (or more completely, On the Origin of Species by Means of Natural Selection, or the Preservation of Favoured Races in the Struggle for Life), published on 24 November 1859, is a work of scientific literature by Charles Darwin which is considered to be the foundation of evolutionary biology.
 
        
             
        
        
        
Answer:
A circle is a closed curved shape that is flat. ... Instead of having all points the same distance from the center point, though, an ellipse is shaped so that when you add together the distances from two points inside the ellipse (called the foci) they always add up to the same number.
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Answer:
i think the first one, Kelp forest act as ecosystem engineers 
Explanation:
if im wrong im sorry