If those are the optional answers, it's most likely sodium.
        
             
        
        
        
Answer:
Which term describes a group of cells that are similar and work together?
Tissues are group of similar cells and work together to perform a specific or particular function
Explanation:
 
        
             
        
        
        
coil, oil and gas, cause pollution 
Which damages the environment, also melts thw glaciers so animals such as polar bears lose their habitats and will come extinct at some point.... hope this helps
 
        
             
        
        
        
Answer: I wish that I could help you, but I don't know what the assignment is and what exactly am I supposed to put in the chart?