●First Burn:skin becomes red and sensitive 
●Second Burn:skin will be red,blistered,swollen,possibly white patches 
●Third Burn:white or charred, dead skin becomes tough and leathery
        
             
        
        
        
The characteristic that the nurse will describe is HIGHER PITCHED. 
When it comes to heart beating in children and adults, one major difference between the two is that, the heart sound typically auscultated in children has higher pitch than that of the adults.
        
             
        
        
        
Just as they do in most ecosystems, decomposers feed off of dead or decaying matter, recycling it back into the ecosystem for plants to receive essential nutrients and to.. basically, de-clutter the world. 
        
             
        
        
        
Preserves animal tracks are called trace.
        
                    
             
        
        
        
Alternative energy sources are those that do not deplete natural resources and do not harm the environment.
Options A, B, and C are all fossil fuels, which we know can be depleted and harm the environment.
The only valid option here is D, Geothermal energy.
Geothermal energy is both renewable and environmentally friendly.