Seafloor spreading occurs at divergent plate boundaries. As tectonic plates slowly move away from each other, heat from the mantle's convection currents makes the crust more plastic and less dense. The less-dense material rises, often forming a mountain or elevated area of the seafloor.
 
        
                    
             
        
        
        
Answer: B and C 
Explanation: Both are below 6 on the scale so their not as hard or tough.
 
        
                    
             
        
        
        
Answer:
When a person eats veggies everyday .. that's consumption
Explanation:
Eating snacks and some cookies is consumption
Members is population go shopping is consumption
 
        
             
        
        
        
Protein synthesis can be increased by <span>a) turning on gene expression.</span>