Answer:carbon can be form naturally or artificially, both give energy by giving heat power.
Explanation:
 
        
             
        
        
        
Answer:
Explanation:
Answer: C, Friction
Which force acts when one object moves against another object?
Friction
 
        
             
        
        
        
Clean energy like solar wind and water
        
             
        
        
        
Decomposers break down the remains of producers and consumers.
        
                    
             
        
        
        
<span>Answer: a. take place in nuclear reactors
</span><span>Controlled nuclear chain reactions are the reaction in nuclear reactors. The reaction is controlled to make its rate slower. This will make the reaction relatively safer, so the energy produced can be changed into electricity in power plant. When the reaction is not controlled, it could cause explosive like in nuclear bomb.</span>