Answer:
gas, liquid, solid
Explanation:
I could also list 12 other states of matter if you're interested 
 
        
                    
             
        
        
        
Carbon dioxide is added to the atmosphere naturally when organisms respire or decompose (decay), carbonate rocks are weathered, forest fires occur, and volcanoes erupt. Carbon dioxide is also added to the atmosphere through human activities, such as the burning of fossil fuels and forests and the production of cement.
 
        
                    
             
        
        
        
Answer:
Digital and analog signals are transmitted through electromagnetic waves. Changes in frequency and amplitude create the music you listen to or images that you see on a screen. Analog signals are composed of continuous waves that can have any values for frequency and amplitude. 
 
        
             
        
        
        
The mitochondria is the powerhouse of the cell!