Answer:
sample A
Explanation:
the first one because of the ppm value
 
        
                    
             
        
        
        
Not 100% sure if its right.
When an object covers equal distances in equal amounts of time, it is moving at a constant speed.
 
        
             
        
        
        
<u />C. Water is an inexhaustible energy resource among these options. Coal, oil, and natural gas we can run of, but for the foreseeable future, there will always be water.
        
             
        
        
        
Density = mass / volume
Mass = 5 kg
Volume = 50 cm³
d = 5 / 50
d = 0,1 kg/cm³
        
             
        
        
        
beneath the oceanic crust and create magma where two tectonic plates meet at a divergent boundary.