Answer:
Energy can be moved from place to place by moving objects, or through sound, light, or electrical currents. Energy can be converted from one form to another form. Kinetic energy can be distinguished from the various forms of potential energy. This is how energy moves. I hope it helps!!
Explanation:
 
        
             
        
        
        
C. Flood protection is the answer
        
             
        
        
        
I can’t see it it’s too blurry
        
             
        
        
        
Can a complex organism interbreed with a simple organism?
        
                    
             
        
        
        
Answer:
Muscles contract through a chain process of electrochemical signalling between the nervous system and muscles. 
Explanation:
The muscle contraction is initiated by the nervous system by sending a signal. This signal also referred to as action potential travel through the motor neuron. This motor neuron releases a chemical signal to muscle when the electrical signal carried by it reaches the neuromuscular junction (a junction where motor neuron meets the muscles).  
The chemical message referred to as neurotransmitter binds to the receptors present on the muscle fibers. These receptors causes the influx of sodium ion which in turn trigger the release of calcium ion thereby initiating the contraction of muscles.