a boulder can change due to erosion and weathering. it can change shape and sometimes color, possibly.
 
        
             
        
        
        
The correct answer is 
<span>C) Q
In fact, the symbol Q represents the heat, which is the form of energy transferred from a hot object to a cooler object. Heat generally refers to the energy related to the motion of the particles, and it is related to the temperature of an object: the higher the temperature of an object, the faster the particles of the object move, and so the object can transfer more energy (as heat) to other objects with lower temperature.</span>
        
             
        
        
        
Answer:
Blood is a homogenous mixture
 
        
                    
             
        
        
        
Explanation:
the force acting perpendicularly on unit area of surface
- unit=pascle .