Answer:
 a community or group of living organisms that live in and interact with each other in a specific environment.
Explanation:
 
        
                    
             
        
        
        
First, we'll identify the beaker containing pure water as follows:
We'll take equal masses from each of the three beakers and measure the mass of each.
We'll then identify the density of each by using the rule : density =mass/volume
Pure water will be the liquid having density equal to 1 gm/cm^3
Then, we'll differentiate between the salt and sugar solution by measuring the conductivity of each solution. Salt solution is a good conductor while solution of sugar is a bad conductor.
        
             
        
        
        
D. Sodium hydroxide aka naOH
        
                    
             
        
        
        
Hopefully this will help you my friend.
 
        
             
        
        
        
Answer:
Dalton says atoms of a given element are identical in mass and the modern one says atoms of a given element are identical in average mass. ... Modern theory says they atoms can be subdivided, created or destroyed by ordinay means.
hope this helps!