The arrow representing the activation energy will decrease in magnitude.
This arrow will be beginning at the x-axis and going up to the maximum of the graph. The reason that its magnitude decreases is because enzymes provide  alternate pathways to reactions; the new pathway has a lower activation energy, so the reaction occurs faster when an enzyme is added. This is why enzymes are referred to as biological catalysts and are a vital part of an organism's body
        
                    
             
        
        
        
I am pretty sure the answer is D (combination)
        
                    
             
        
        
        
Answer:
It depends on the battlefield.
Explanation:
sea going crocodile would win in the sea while jaguar would win on land.
 
        
             
        
        
        
Answer:
One
Explanation:
RNA is a single-stranded molecule
 
        
                    
             
        
        
        
Answer:
The given blank can be filled with a venule. 
Explanation:
A small blood vessel in the microcirculation, which connects the capillary beds to the veins is known as the venules. Various venules combine to form a vein. The walls of a venule are formed of three layers, that is, the inner endothelium formed of squamous endothelial cells, a middle layer of elastic and muscle tissue, and an external layer formed of fibrous connective tissue.  
The size of a venule ranges from 8 to 100 micrometers in diameter and are produced when capillaries come in close association. A venule refers to a small blood vessel that permits the deoxygenated blood high in carbon dioxide and waste products to return from capillary beds to the bigger blood vessels known as veins.