Distance - an amount of space between two things
Displacement - something that is moved from original place or the area between a object when place in water (volume)
Slope - rise over run or an angle of a line 
Sl unit for speed and velocity - meter per second
Sl unit for acceleration - meter per second squared 
        
             
        
        
        
I believe it is the second one not 100% sure so don't blame me if you fail.
        
             
        
        
        
Answer:
B) Atoms of elements in the sun combine to release energy.
Explanation:
The process is called fusion, where atoms collide violently and release energy in the process, thus making new kinds of atoms.
 
        
             
        
        
        
Answer: Acetyl-CoA
Explanation:
Acetyl-CoA can be obtained from the pyruvate, the end product of aerobic glycolysis. Also, Acetyl-CoA is the one of the starting materials of citric acid cycle.
For lipid synthesis, biotin carries activated CO2 that is incorporated into acetyl-CoA to form Malonyl-CoA, which is then elongated to yield various lipids of different length.
Thus, Acetyl-CoA is the building block of lipid synthesis