Answer:
an experiment
Explanation: Any experiment you do to benefit the world in the name of science
 
        
                    
             
        
        
        
Answer:
The protein is a symport protein. 
Explanation:
Transport proteins are proteins which are involved in the transport of solutes across the cell membrane. The binding of the solute to be transported across the membrane causes a conformational change in the shape of the protein, thereby moving the molecule to the side of nthe membrane it is to be transported. The difference in the concentration of the solute across the membrane known as concentration gradient is mainly responsible for the transport of molecules by the transport proteins.
There are three types of transport proteins: uniport, symport and antiport transport proteins.
Uniporters are involved in moving only one molecule across a membrane 
Symporters are involved in moving two or more molecule across a membrane in the same direction.
Antiporters are involved in moving two or more molecule across a membrane in opposite directions.
From the description of the transport protein in the question, both solutes A and B are moved across the membrane simultaneously in the same direction. Therefore, the protein is a symport protein. 
 
        
             
        
        
        
Sugar ...... (I need to make this 20 characters to submit)
        
                    
             
        
        
        
Well they can begin as cosmic rays colliding with water molecules to create clouds. Hope this helps :)